diff --git a/tests/bcl-test/Mono.Data.Sqlite/Mono.Data.Sqlite.csproj.template b/tests/bcl-test/Mono.Data.Sqlite/Mono.Data.Sqlite.csproj.template
index 4ab1869aff7c..96e870ba9cb3 100644
--- a/tests/bcl-test/Mono.Data.Sqlite/Mono.Data.Sqlite.csproj.template
+++ b/tests/bcl-test/Mono.Data.Sqlite/Mono.Data.Sqlite.csproj.template
@@ -19,7 +19,7 @@
     <DebugType>full</DebugType>
     <Optimize>False</Optimize>
     <OutputPath>bin\iPhoneSimulator\Debug</OutputPath>
-    <DefineConstants>DEBUG;INSIDE_CORLIB;LIBC;NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;MONO_DATACONVERTER_STATIC_METHODS;NET_2_1;MOBILE;MONOTOUCH</DefineConstants>
+    <DefineConstants>DEBUG;INSIDE_CORLIB;LIBC;NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;MONO_DATACONVERTER_STATIC_METHODS;NET_2_1;MOBILE;MONOTOUCH;DISABLE_CAS_USE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <MtouchDebug>True</MtouchDebug>
@@ -32,7 +32,7 @@
     <DebugType>none</DebugType>
     <Optimize>True</Optimize>
     <OutputPath>bin\iPhoneSimulator\Release</OutputPath>
-    <DefineConstants>INSIDE_CORLIB;LIBC;NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;MONO_DATACONVERTER_STATIC_METHODS;NET_2_1;MOBILE;MONOTOUCH</DefineConstants>
+    <DefineConstants>INSIDE_CORLIB;LIBC;NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;MONO_DATACONVERTER_STATIC_METHODS;NET_2_1;MOBILE;MONOTOUCH;DISABLE_CAS_USE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <ConsolePause>False</ConsolePause>
@@ -45,7 +45,7 @@
     <DebugType>full</DebugType>
     <Optimize>False</Optimize>
     <OutputPath>bin\iPhone\Debug</OutputPath>
-    <DefineConstants>DEBUG;INSIDE_CORLIB;LIBC;NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;MONO_DATACONVERTER_STATIC_METHODS;NET_2_1;MOBILE;MONOTOUCH</DefineConstants>
+    <DefineConstants>DEBUG;INSIDE_CORLIB;LIBC;NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;MONO_DATACONVERTER_STATIC_METHODS;NET_2_1;MOBILE;MONOTOUCH;DISABLE_CAS_USE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <CodesignKey>iPhone Developer</CodesignKey>
@@ -59,13 +59,13 @@
     <DebugType>none</DebugType>
     <Optimize>True</Optimize>
     <OutputPath>bin\iPhone\Release</OutputPath>
-    <DefineConstants>INSIDE_CORLIB;LIBC;NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;MONO_DATACONVERTER_STATIC_METHODS;NET_2_1;MOBILE;MONOTOUCH</DefineConstants>
+    <DefineConstants>INSIDE_CORLIB;LIBC;NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;MONO_DATACONVERTER_STATIC_METHODS;NET_2_1;MOBILE;MONOTOUCH;DISABLE_CAS_USE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <ConsolePause>False</ConsolePause>
     <CodesignKey>iPhone Developer</CodesignKey>
     <AllowUnsafeBlocks>True</AllowUnsafeBlocks>
-    <DefineConstants>INSIDE_CORLIB;LIBC;NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;MONO_DATACONVERTER_STATIC_METHODS;NET_2_1;MOBILE;MONOTOUCH</DefineConstants>
+    <DefineConstants>INSIDE_CORLIB;LIBC;NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;MONO_DATACONVERTER_STATIC_METHODS;NET_2_1;MOBILE;MONOTOUCH;DISABLE_CAS_USE</DefineConstants>
     <MtouchI18n>cjk</MtouchI18n>
     <MtouchArch>ARMv7</MtouchArch>
   </PropertyGroup>
@@ -73,7 +73,7 @@
     <DebugType>none</DebugType>
     <Optimize>True</Optimize>
     <OutputPath>bin\iPhone\Ad-Hoc</OutputPath>
-    <DefineConstants>INSIDE_CORLIB;LIBC;NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;MONO_DATACONVERTER_STATIC_METHODS;NET_2_1;MOBILE;MONOTOUCH</DefineConstants>
+    <DefineConstants>INSIDE_CORLIB;LIBC;NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;MONO_DATACONVERTER_STATIC_METHODS;NET_2_1;MOBILE;MONOTOUCH;DISABLE_CAS_USE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <ConsolePause>False</ConsolePause>
@@ -87,7 +87,7 @@
     <DebugType>none</DebugType>
     <Optimize>True</Optimize>
     <OutputPath>bin\iPhone\AppStore</OutputPath>
-    <DefineConstants>INSIDE_CORLIB;LIBC;NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;MONO_DATACONVERTER_STATIC_METHODS;NET_2_1;MOBILE;MONOTOUCH</DefineConstants>
+    <DefineConstants>INSIDE_CORLIB;LIBC;NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;MONO_DATACONVERTER_STATIC_METHODS;NET_2_1;MOBILE;MONOTOUCH;DISABLE_CAS_USE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <ConsolePause>False</ConsolePause>
diff --git a/tests/bcl-test/Mono.Security/Mono.Security.csproj.template b/tests/bcl-test/Mono.Security/Mono.Security.csproj.template
index 3fc411d9c6ba..7790a174c6af 100644
--- a/tests/bcl-test/Mono.Security/Mono.Security.csproj.template
+++ b/tests/bcl-test/Mono.Security/Mono.Security.csproj.template
@@ -19,7 +19,7 @@
     <DebugType>full</DebugType>
     <Optimize>False</Optimize>
     <OutputPath>bin\iPhoneSimulator\Debug</OutputPath>
-    <DefineConstants>DEBUG;NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH</DefineConstants>
+    <DefineConstants>DEBUG;NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH;DISABLE_CAS_USE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <MtouchDebug>True</MtouchDebug>
@@ -32,7 +32,7 @@
     <DebugType>none</DebugType>
     <Optimize>True</Optimize>
     <OutputPath>bin\iPhoneSimulator\Release</OutputPath>
-    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH</DefineConstants>
+    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH;DISABLE_CAS_USE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <ConsolePause>False</ConsolePause>
@@ -45,7 +45,7 @@
     <DebugType>full</DebugType>
     <Optimize>False</Optimize>
     <OutputPath>bin\iPhone\Debug</OutputPath>
-    <DefineConstants>DEBUG;NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH</DefineConstants>
+    <DefineConstants>DEBUG;NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH;DISABLE_CAS_USE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <CodesignKey>iPhone Developer</CodesignKey>
@@ -58,20 +58,20 @@
     <DebugType>none</DebugType>
     <Optimize>True</Optimize>
     <OutputPath>bin\iPhone\Release</OutputPath>
-    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH</DefineConstants>
+    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH;DISABLE_CAS_USE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <ConsolePause>False</ConsolePause>
     <CodesignKey>iPhone Developer</CodesignKey>
     <AllowUnsafeBlocks>True</AllowUnsafeBlocks>
-    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH</DefineConstants>
+    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH;DISABLE_CAS_USE</DefineConstants>
     <MtouchArch>ARMv7</MtouchArch>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Ad-Hoc|iPhone' ">
     <DebugType>none</DebugType>
     <Optimize>True</Optimize>
     <OutputPath>bin\iPhone\Ad-Hoc</OutputPath>
-    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH</DefineConstants>
+    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH;DISABLE_CAS_USE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <ConsolePause>False</ConsolePause>
@@ -85,7 +85,7 @@
     <DebugType>none</DebugType>
     <Optimize>True</Optimize>
     <OutputPath>bin\iPhone\AppStore</OutputPath>
-    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH</DefineConstants>
+    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH;DISABLE_CAS_USE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <ConsolePause>False</ConsolePause>
diff --git a/tests/bcl-test/System.ComponentModel.DataAnnotations/System.ComponentModel.DataAnnotations.csproj.template b/tests/bcl-test/System.ComponentModel.DataAnnotations/System.ComponentModel.DataAnnotations.csproj.template
index 9e111572341f..6e60f8ed6ee9 100644
--- a/tests/bcl-test/System.ComponentModel.DataAnnotations/System.ComponentModel.DataAnnotations.csproj.template
+++ b/tests/bcl-test/System.ComponentModel.DataAnnotations/System.ComponentModel.DataAnnotations.csproj.template
@@ -19,7 +19,7 @@
     <DebugType>full</DebugType>
     <Optimize>False</Optimize>
     <OutputPath>bin\iPhoneSimulator\Debug</OutputPath>
-    <DefineConstants>DEBUG;NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH</DefineConstants>
+    <DefineConstants>DEBUG;NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH;DISABLE_CAS_USE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <MtouchDebug>True</MtouchDebug>
@@ -32,7 +32,7 @@
     <DebugType>none</DebugType>
     <Optimize>True</Optimize>
     <OutputPath>bin\iPhoneSimulator\Release</OutputPath>
-    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH</DefineConstants>
+    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH;DISABLE_CAS_USE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <ConsolePause>False</ConsolePause>
@@ -45,7 +45,7 @@
     <DebugType>full</DebugType>
     <Optimize>False</Optimize>
     <OutputPath>bin\iPhone\Debug</OutputPath>
-    <DefineConstants>DEBUG;NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH</DefineConstants>
+    <DefineConstants>DEBUG;NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH;DISABLE_CAS_USE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <CodesignKey>iPhone Developer</CodesignKey>
@@ -58,20 +58,20 @@
     <DebugType>none</DebugType>
     <Optimize>True</Optimize>
     <OutputPath>bin\iPhone\Release</OutputPath>
-    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH</DefineConstants>
+    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH;DISABLE_CAS_USE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <ConsolePause>False</ConsolePause>
     <CodesignKey>iPhone Developer</CodesignKey>
     <AllowUnsafeBlocks>True</AllowUnsafeBlocks>
-    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH</DefineConstants>
+    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH;DISABLE_CAS_USE</DefineConstants>
     <MtouchArch>ARMv7</MtouchArch>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Ad-Hoc|iPhone' ">
     <DebugType>none</DebugType>
     <Optimize>True</Optimize>
     <OutputPath>bin\iPhone\Ad-Hoc</OutputPath>
-    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH</DefineConstants>
+    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH;DISABLE_CAS_USE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <ConsolePause>False</ConsolePause>
diff --git a/tests/bcl-test/System.Core/System.Core.csproj.template b/tests/bcl-test/System.Core/System.Core.csproj.template
index 062b42d8ada2..19098a3181b9 100644
--- a/tests/bcl-test/System.Core/System.Core.csproj.template
+++ b/tests/bcl-test/System.Core/System.Core.csproj.template
@@ -19,7 +19,7 @@
     <DebugType>full</DebugType>
     <Optimize>False</Optimize>
     <OutputPath>bin\iPhoneSimulator\Debug</OutputPath>
-    <DefineConstants>DEBUG;NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH</DefineConstants>
+    <DefineConstants>DEBUG;NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH;DISABLE_CAS_USE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <MtouchDebug>True</MtouchDebug>
@@ -32,7 +32,7 @@
     <DebugType>none</DebugType>
     <Optimize>True</Optimize>
     <OutputPath>bin\iPhoneSimulator\Release</OutputPath>
-    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH</DefineConstants>
+    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH;DISABLE_CAS_USE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <ConsolePause>False</ConsolePause>
@@ -45,7 +45,7 @@
     <DebugType>full</DebugType>
     <Optimize>False</Optimize>
     <OutputPath>bin\iPhone\Debug</OutputPath>
-    <DefineConstants>DEBUG;NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH</DefineConstants>
+    <DefineConstants>DEBUG;NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH;DISABLE_CAS_USE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <CodesignKey>iPhone Developer</CodesignKey>
@@ -58,13 +58,13 @@
     <DebugType>none</DebugType>
     <Optimize>True</Optimize>
     <OutputPath>bin\iPhone\Release</OutputPath>
-    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH</DefineConstants>
+    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH;DISABLE_CAS_USE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <ConsolePause>False</ConsolePause>
     <CodesignKey>iPhone Developer</CodesignKey>
     <AllowUnsafeBlocks>True</AllowUnsafeBlocks>
-    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH</DefineConstants>
+    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH;DISABLE_CAS_USE</DefineConstants>
     <MtouchArch>ARMv7</MtouchArch>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Ad-Hoc|iPhone' ">
@@ -84,7 +84,7 @@
     <DebugType>none</DebugType>
     <Optimize>True</Optimize>
     <OutputPath>bin\iPhone\AppStore</OutputPath>
-    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH</DefineConstants>
+    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH;DISABLE_CAS_USE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <ConsolePause>False</ConsolePause>
diff --git a/tests/bcl-test/System.Data/System.Data.csproj.template b/tests/bcl-test/System.Data/System.Data.csproj.template
index 9884de12caa1..eb1ba1357098 100644
--- a/tests/bcl-test/System.Data/System.Data.csproj.template
+++ b/tests/bcl-test/System.Data/System.Data.csproj.template
@@ -19,7 +19,7 @@
     <DebugType>full</DebugType>
     <Optimize>False</Optimize>
     <OutputPath>bin\iPhoneSimulator\Debug</OutputPath>
-    <DefineConstants>DEBUG;NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH</DefineConstants>
+    <DefineConstants>DEBUG;NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH;DISABLE_CAS_USE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <MtouchDebug>True</MtouchDebug>
@@ -33,7 +33,7 @@
     <DebugType>none</DebugType>
     <Optimize>True</Optimize>
     <OutputPath>bin\iPhoneSimulator\Release</OutputPath>
-    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH</DefineConstants>
+    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH;DISABLE_CAS_USE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <ConsolePause>False</ConsolePause>
@@ -47,7 +47,7 @@
     <DebugType>full</DebugType>
     <Optimize>False</Optimize>
     <OutputPath>bin\iPhone\Debug</OutputPath>
-    <DefineConstants>DEBUG;NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH</DefineConstants>
+    <DefineConstants>DEBUG;NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH;DISABLE_CAS_USE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <CodesignKey>iPhone Developer</CodesignKey>
@@ -61,13 +61,13 @@
     <DebugType>none</DebugType>
     <Optimize>True</Optimize>
     <OutputPath>bin\iPhone\Release</OutputPath>
-    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH</DefineConstants>
+    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH;DISABLE_CAS_USE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <ConsolePause>False</ConsolePause>
     <CodesignKey>iPhone Developer</CodesignKey>
     <AllowUnsafeBlocks>True</AllowUnsafeBlocks>
-    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH</DefineConstants>
+    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH;DISABLE_CAS_USE</DefineConstants>
     <MtouchArch>ARMv7</MtouchArch>
     <MtouchI18n>west</MtouchI18n>    
   </PropertyGroup>
@@ -75,7 +75,7 @@
     <DebugType>none</DebugType>
     <Optimize>True</Optimize>
     <OutputPath>bin\iPhone\Ad-Hoc</OutputPath>
-    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH</DefineConstants>
+    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH;DISABLE_CAS_USE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <ConsolePause>False</ConsolePause>
@@ -90,7 +90,7 @@
     <DebugType>none</DebugType>
     <Optimize>True</Optimize>
     <OutputPath>bin\iPhone\AppStore</OutputPath>
-    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH</DefineConstants>
+    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH;DISABLE_CAS_USE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <ConsolePause>False</ConsolePause>
diff --git a/tests/bcl-test/System.Json/System.Json.csproj.template b/tests/bcl-test/System.Json/System.Json.csproj.template
index 91112c091c32..c00622cc6c80 100644
--- a/tests/bcl-test/System.Json/System.Json.csproj.template
+++ b/tests/bcl-test/System.Json/System.Json.csproj.template
@@ -19,7 +19,7 @@
     <DebugType>full</DebugType>
     <Optimize>False</Optimize>
     <OutputPath>bin\iPhoneSimulator\Debug</OutputPath>
-    <DefineConstants>DEBUG;NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH</DefineConstants>
+    <DefineConstants>DEBUG;NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH;DISABLE_CAS_USE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <MtouchDebug>True</MtouchDebug>
@@ -32,7 +32,7 @@
     <DebugType>none</DebugType>
     <Optimize>True</Optimize>
     <OutputPath>bin\iPhoneSimulator\Release</OutputPath>
-    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH</DefineConstants>
+    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH;DISABLE_CAS_USE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <ConsolePause>False</ConsolePause>
@@ -45,7 +45,7 @@
     <DebugType>full</DebugType>
     <Optimize>False</Optimize>
     <OutputPath>bin\iPhone\Debug</OutputPath>
-    <DefineConstants>DEBUG;NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH</DefineConstants>
+    <DefineConstants>DEBUG;NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH;DISABLE_CAS_USE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <CodesignKey>iPhone Developer</CodesignKey>
@@ -58,20 +58,20 @@
     <DebugType>none</DebugType>
     <Optimize>True</Optimize>
     <OutputPath>bin\iPhone\Release</OutputPath>
-    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH</DefineConstants>
+    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH;DISABLE_CAS_USE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <ConsolePause>False</ConsolePause>
     <CodesignKey>iPhone Developer</CodesignKey>
     <AllowUnsafeBlocks>True</AllowUnsafeBlocks>
-    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH</DefineConstants>
+    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH;DISABLE_CAS_USE</DefineConstants>
     <MtouchArch>ARMv7</MtouchArch>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Ad-Hoc|iPhone' ">
     <DebugType>none</DebugType>
     <Optimize>True</Optimize>
     <OutputPath>bin\iPhone\Ad-Hoc</OutputPath>
-    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH</DefineConstants>
+    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH;DISABLE_CAS_USE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <ConsolePause>False</ConsolePause>
@@ -85,7 +85,7 @@
     <DebugType>none</DebugType>
     <Optimize>True</Optimize>
     <OutputPath>bin\iPhone\AppStore</OutputPath>
-    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH</DefineConstants>
+    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH;DISABLE_CAS_USE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <ConsolePause>False</ConsolePause>
diff --git a/tests/bcl-test/System.Net.Http/System.Net.Http.csproj.template b/tests/bcl-test/System.Net.Http/System.Net.Http.csproj.template
index 6250c37953fc..65d3618f8ca0 100644
--- a/tests/bcl-test/System.Net.Http/System.Net.Http.csproj.template
+++ b/tests/bcl-test/System.Net.Http/System.Net.Http.csproj.template
@@ -19,7 +19,7 @@
     <DebugType>full</DebugType>
     <Optimize>False</Optimize>
     <OutputPath>bin\iPhoneSimulator\Debug</OutputPath>
-    <DefineConstants>DEBUG;NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH</DefineConstants>
+    <DefineConstants>DEBUG;NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH;DISABLE_CAS_USE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <MtouchDebug>True</MtouchDebug>
@@ -32,7 +32,7 @@
     <DebugType>none</DebugType>
     <Optimize>True</Optimize>
     <OutputPath>bin\iPhoneSimulator\Release</OutputPath>
-    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH</DefineConstants>
+    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH;DISABLE_CAS_USE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <ConsolePause>False</ConsolePause>
@@ -45,7 +45,7 @@
     <DebugType>full</DebugType>
     <Optimize>False</Optimize>
     <OutputPath>bin\iPhone\Debug</OutputPath>
-    <DefineConstants>DEBUG;NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH</DefineConstants>
+    <DefineConstants>DEBUG;NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH;DISABLE_CAS_USE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <CodesignKey>iPhone Developer</CodesignKey>
@@ -58,20 +58,20 @@
     <DebugType>none</DebugType>
     <Optimize>True</Optimize>
     <OutputPath>bin\iPhone\Release</OutputPath>
-    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH</DefineConstants>
+    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH;DISABLE_CAS_USE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <ConsolePause>False</ConsolePause>
     <CodesignKey>iPhone Developer</CodesignKey>
     <AllowUnsafeBlocks>True</AllowUnsafeBlocks>
-    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH</DefineConstants>
+    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH;DISABLE_CAS_USE</DefineConstants>
     <MtouchArch>ARMv7</MtouchArch>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Ad-Hoc|iPhone' ">
     <DebugType>none</DebugType>
     <Optimize>True</Optimize>
     <OutputPath>bin\iPhone\Ad-Hoc</OutputPath>
-    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH</DefineConstants>
+    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH;DISABLE_CAS_USE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <ConsolePause>False</ConsolePause>
@@ -85,7 +85,7 @@
     <DebugType>none</DebugType>
     <Optimize>True</Optimize>
     <OutputPath>bin\iPhone\AppStore</OutputPath>
-    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH</DefineConstants>
+    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH;DISABLE_CAS_USE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <ConsolePause>False</ConsolePause>
diff --git a/tests/bcl-test/System.Numerics/System.Numerics.csproj.template b/tests/bcl-test/System.Numerics/System.Numerics.csproj.template
index a99e8ce87ced..05c0c00f6793 100644
--- a/tests/bcl-test/System.Numerics/System.Numerics.csproj.template
+++ b/tests/bcl-test/System.Numerics/System.Numerics.csproj.template
@@ -19,7 +19,7 @@
     <DebugType>full</DebugType>
     <Optimize>False</Optimize>
     <OutputPath>bin\iPhoneSimulator\Debug</OutputPath>
-    <DefineConstants>DEBUG;NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH</DefineConstants>
+    <DefineConstants>DEBUG;NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH;DISABLE_CAS_USE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <MtouchDebug>True</MtouchDebug>
@@ -32,7 +32,7 @@
     <DebugType>none</DebugType>
     <Optimize>True</Optimize>
     <OutputPath>bin\iPhoneSimulator\Release</OutputPath>
-    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH</DefineConstants>
+    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH;DISABLE_CAS_USE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <ConsolePause>False</ConsolePause>
@@ -45,7 +45,7 @@
     <DebugType>full</DebugType>
     <Optimize>False</Optimize>
     <OutputPath>bin\iPhone\Debug</OutputPath>
-    <DefineConstants>DEBUG;NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH</DefineConstants>
+    <DefineConstants>DEBUG;NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH;DISABLE_CAS_USE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <CodesignKey>iPhone Developer</CodesignKey>
@@ -58,20 +58,20 @@
     <DebugType>none</DebugType>
     <Optimize>True</Optimize>
     <OutputPath>bin\iPhone\Release</OutputPath>
-    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH</DefineConstants>
+    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH;DISABLE_CAS_USE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <ConsolePause>False</ConsolePause>
     <CodesignKey>iPhone Developer</CodesignKey>
     <AllowUnsafeBlocks>True</AllowUnsafeBlocks>
-    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH</DefineConstants>
+    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH;DISABLE_CAS_USE</DefineConstants>
     <MtouchArch>ARMv7</MtouchArch>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Ad-Hoc|iPhone' ">
     <DebugType>none</DebugType>
     <Optimize>True</Optimize>
     <OutputPath>bin\iPhone\Ad-Hoc</OutputPath>
-    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH</DefineConstants>
+    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH;DISABLE_CAS_USE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <ConsolePause>False</ConsolePause>
@@ -85,7 +85,7 @@
     <DebugType>none</DebugType>
     <Optimize>True</Optimize>
     <OutputPath>bin\iPhone\AppStore</OutputPath>
-    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH</DefineConstants>
+    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH;DISABLE_CAS_USE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <ConsolePause>False</ConsolePause>
diff --git a/tests/bcl-test/System.Runtime.Serialization/System.Runtime.Serialization.csproj.template b/tests/bcl-test/System.Runtime.Serialization/System.Runtime.Serialization.csproj.template
index 12b8b8cc9f17..cdd5ed10d32f 100644
--- a/tests/bcl-test/System.Runtime.Serialization/System.Runtime.Serialization.csproj.template
+++ b/tests/bcl-test/System.Runtime.Serialization/System.Runtime.Serialization.csproj.template
@@ -19,7 +19,7 @@
     <DebugType>full</DebugType>
     <Optimize>False</Optimize>
     <OutputPath>bin\iPhoneSimulator\Debug</OutputPath>
-    <DefineConstants>DEBUG;NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH</DefineConstants>
+    <DefineConstants>DEBUG;NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH;DISABLE_CAS_USE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <MtouchDebug>True</MtouchDebug>
@@ -32,7 +32,7 @@
     <DebugType>none</DebugType>
     <Optimize>True</Optimize>
     <OutputPath>bin\iPhoneSimulator\Release</OutputPath>
-    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH</DefineConstants>
+    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH;DISABLE_CAS_USE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <ConsolePause>False</ConsolePause>
@@ -45,7 +45,7 @@
     <DebugType>full</DebugType>
     <Optimize>False</Optimize>
     <OutputPath>bin\iPhone\Debug</OutputPath>
-    <DefineConstants>DEBUG;NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH</DefineConstants>
+    <DefineConstants>DEBUG;NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH;DISABLE_CAS_USE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <CodesignKey>iPhone Developer</CodesignKey>
@@ -58,20 +58,20 @@
     <DebugType>none</DebugType>
     <Optimize>True</Optimize>
     <OutputPath>bin\iPhone\Release</OutputPath>
-    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH</DefineConstants>
+    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH;DISABLE_CAS_USE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <ConsolePause>False</ConsolePause>
     <CodesignKey>iPhone Developer</CodesignKey>
     <AllowUnsafeBlocks>True</AllowUnsafeBlocks>
-    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH</DefineConstants>
+    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH;DISABLE_CAS_USE</DefineConstants>
     <MtouchArch>ARMv7</MtouchArch>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Ad-Hoc|iPhone' ">
     <DebugType>none</DebugType>
     <Optimize>True</Optimize>
     <OutputPath>bin\iPhone\Ad-Hoc</OutputPath>
-    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH</DefineConstants>
+    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH;DISABLE_CAS_USE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <ConsolePause>False</ConsolePause>
@@ -85,7 +85,7 @@
     <DebugType>none</DebugType>
     <Optimize>True</Optimize>
     <OutputPath>bin\iPhone\AppStore</OutputPath>
-    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH</DefineConstants>
+    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH;DISABLE_CAS_USE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <ConsolePause>False</ConsolePause>
diff --git a/tests/bcl-test/System.ServiceModel.Web/System.ServiceModel.Web.csproj.template b/tests/bcl-test/System.ServiceModel.Web/System.ServiceModel.Web.csproj.template
index 1cee0a828d9d..88c9ab4b5961 100644
--- a/tests/bcl-test/System.ServiceModel.Web/System.ServiceModel.Web.csproj.template
+++ b/tests/bcl-test/System.ServiceModel.Web/System.ServiceModel.Web.csproj.template
@@ -19,7 +19,7 @@
     <DebugType>full</DebugType>
     <Optimize>False</Optimize>
     <OutputPath>bin\iPhoneSimulator\Debug</OutputPath>
-    <DefineConstants>DEBUG;NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH</DefineConstants>
+    <DefineConstants>DEBUG;NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH;DISABLE_CAS_USE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <MtouchDebug>True</MtouchDebug>
@@ -32,7 +32,7 @@
     <DebugType>none</DebugType>
     <Optimize>True</Optimize>
     <OutputPath>bin\iPhoneSimulator\Release</OutputPath>
-    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH</DefineConstants>
+    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH;DISABLE_CAS_USE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <ConsolePause>False</ConsolePause>
@@ -45,7 +45,7 @@
     <DebugType>full</DebugType>
     <Optimize>False</Optimize>
     <OutputPath>bin\iPhone\Debug</OutputPath>
-    <DefineConstants>DEBUG;NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH</DefineConstants>
+    <DefineConstants>DEBUG;NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH;DISABLE_CAS_USE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <CodesignKey>iPhone Developer</CodesignKey>
@@ -58,20 +58,20 @@
     <DebugType>none</DebugType>
     <Optimize>True</Optimize>
     <OutputPath>bin\iPhone\Release</OutputPath>
-    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH</DefineConstants>
+    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH;DISABLE_CAS_USE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <ConsolePause>False</ConsolePause>
     <CodesignKey>iPhone Developer</CodesignKey>
     <AllowUnsafeBlocks>True</AllowUnsafeBlocks>
-    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH</DefineConstants>
+    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH;DISABLE_CAS_USE</DefineConstants>
     <MtouchArch>ARMv7</MtouchArch>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Ad-Hoc|iPhone' ">
     <DebugType>none</DebugType>
     <Optimize>True</Optimize>
     <OutputPath>bin\iPhone\Ad-Hoc</OutputPath>
-    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH</DefineConstants>
+    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH;DISABLE_CAS_USE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <ConsolePause>False</ConsolePause>
@@ -85,7 +85,7 @@
     <DebugType>none</DebugType>
     <Optimize>True</Optimize>
     <OutputPath>bin\iPhone\AppStore</OutputPath>
-    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH</DefineConstants>
+    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH;DISABLE_CAS_USE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <ConsolePause>False</ConsolePause>
diff --git a/tests/bcl-test/System.Transactions/System.Transactions.csproj.template b/tests/bcl-test/System.Transactions/System.Transactions.csproj.template
index f54275325179..ac0023741332 100644
--- a/tests/bcl-test/System.Transactions/System.Transactions.csproj.template
+++ b/tests/bcl-test/System.Transactions/System.Transactions.csproj.template
@@ -19,7 +19,7 @@
     <DebugType>full</DebugType>
     <Optimize>False</Optimize>
     <OutputPath>bin\iPhoneSimulator\Debug</OutputPath>
-    <DefineConstants>DEBUG;NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH</DefineConstants>
+    <DefineConstants>DEBUG;NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH;DISABLE_CAS_USE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <MtouchDebug>True</MtouchDebug>
@@ -32,7 +32,7 @@
     <DebugType>none</DebugType>
     <Optimize>True</Optimize>
     <OutputPath>bin\iPhoneSimulator\Release</OutputPath>
-    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH</DefineConstants>
+    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH;DISABLE_CAS_USE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <ConsolePause>False</ConsolePause>
@@ -45,7 +45,7 @@
     <DebugType>full</DebugType>
     <Optimize>False</Optimize>
     <OutputPath>bin\iPhone\Debug</OutputPath>
-    <DefineConstants>DEBUG;NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH</DefineConstants>
+    <DefineConstants>DEBUG;NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH;DISABLE_CAS_USE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <CodesignKey>iPhone Developer</CodesignKey>
@@ -58,20 +58,20 @@
     <DebugType>none</DebugType>
     <Optimize>True</Optimize>
     <OutputPath>bin\iPhone\Release</OutputPath>
-    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH</DefineConstants>
+    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH;DISABLE_CAS_USE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <ConsolePause>False</ConsolePause>
     <CodesignKey>iPhone Developer</CodesignKey>
     <AllowUnsafeBlocks>True</AllowUnsafeBlocks>
-    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH</DefineConstants>
+    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH;DISABLE_CAS_USE</DefineConstants>
     <MtouchArch>ARMv7</MtouchArch>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Ad-Hoc|iPhone' ">
     <DebugType>none</DebugType>
     <Optimize>True</Optimize>
     <OutputPath>bin\iPhone\Ad-Hoc</OutputPath>
-    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH</DefineConstants>
+    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH;DISABLE_CAS_USE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <ConsolePause>False</ConsolePause>
@@ -85,7 +85,7 @@
     <DebugType>none</DebugType>
     <Optimize>True</Optimize>
     <OutputPath>bin\iPhone\AppStore</OutputPath>
-    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH</DefineConstants>
+    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH;DISABLE_CAS_USE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <ConsolePause>False</ConsolePause>
diff --git a/tests/bcl-test/System.Web.Services/System.Web.Services.csproj.template b/tests/bcl-test/System.Web.Services/System.Web.Services.csproj.template
index edf79eb4b3b1..f095a844391c 100644
--- a/tests/bcl-test/System.Web.Services/System.Web.Services.csproj.template
+++ b/tests/bcl-test/System.Web.Services/System.Web.Services.csproj.template
@@ -19,7 +19,7 @@
     <DebugType>full</DebugType>
     <Optimize>False</Optimize>
     <OutputPath>bin\iPhoneSimulator\Debug</OutputPath>
-    <DefineConstants>DEBUG;NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH</DefineConstants>
+    <DefineConstants>DEBUG;NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH;DISABLE_CAS_USE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <MtouchDebug>True</MtouchDebug>
@@ -32,7 +32,7 @@
     <DebugType>none</DebugType>
     <Optimize>True</Optimize>
     <OutputPath>bin\iPhoneSimulator\Release</OutputPath>
-    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH</DefineConstants>
+    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH;DISABLE_CAS_USE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <ConsolePause>False</ConsolePause>
@@ -45,7 +45,7 @@
     <DebugType>full</DebugType>
     <Optimize>False</Optimize>
     <OutputPath>bin\iPhone\Debug</OutputPath>
-    <DefineConstants>DEBUG;NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH</DefineConstants>
+    <DefineConstants>DEBUG;NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH;DISABLE_CAS_USE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <CodesignKey>iPhone Developer</CodesignKey>
@@ -58,20 +58,20 @@
     <DebugType>none</DebugType>
     <Optimize>True</Optimize>
     <OutputPath>bin\iPhone\Release</OutputPath>
-    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH</DefineConstants>
+    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH;DISABLE_CAS_USE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <ConsolePause>False</ConsolePause>
     <CodesignKey>iPhone Developer</CodesignKey>
     <AllowUnsafeBlocks>True</AllowUnsafeBlocks>
-    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH</DefineConstants>
+    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH;DISABLE_CAS_USE</DefineConstants>
     <MtouchArch>ARMv7</MtouchArch>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Ad-Hoc|iPhone' ">
     <DebugType>none</DebugType>
     <Optimize>True</Optimize>
     <OutputPath>bin\iPhone\Ad-Hoc</OutputPath>
-    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH</DefineConstants>
+    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH;DISABLE_CAS_USE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <ConsolePause>False</ConsolePause>
@@ -85,7 +85,7 @@
     <DebugType>none</DebugType>
     <Optimize>True</Optimize>
     <OutputPath>bin\iPhone\AppStore</OutputPath>
-    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH</DefineConstants>
+    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH;DISABLE_CAS_USE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <ConsolePause>False</ConsolePause>
diff --git a/tests/bcl-test/System.Xml.Linq/System.Xml.Linq.csproj.template b/tests/bcl-test/System.Xml.Linq/System.Xml.Linq.csproj.template
index be4494e9877b..d6f686c1a1fc 100644
--- a/tests/bcl-test/System.Xml.Linq/System.Xml.Linq.csproj.template
+++ b/tests/bcl-test/System.Xml.Linq/System.Xml.Linq.csproj.template
@@ -19,7 +19,7 @@
     <DebugType>full</DebugType>
     <Optimize>False</Optimize>
     <OutputPath>bin\iPhoneSimulator\Debug</OutputPath>
-    <DefineConstants>DEBUG;NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH</DefineConstants>
+    <DefineConstants>DEBUG;NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH;DISABLE_CAS_USE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <MtouchDebug>True</MtouchDebug>
@@ -44,7 +44,7 @@
     <DebugType>full</DebugType>
     <Optimize>False</Optimize>
     <OutputPath>bin\iPhone\Debug</OutputPath>
-    <DefineConstants>DEBUG;NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH</DefineConstants>
+    <DefineConstants>DEBUG;NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH;DISABLE_CAS_USE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <CodesignKey>iPhone Developer</CodesignKey>
@@ -62,7 +62,7 @@
     <ConsolePause>False</ConsolePause>
     <CodesignKey>iPhone Developer</CodesignKey>
     <AllowUnsafeBlocks>True</AllowUnsafeBlocks>
-    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH</DefineConstants>
+    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH;DISABLE_CAS_USE</DefineConstants>
     <MtouchArch>ARMv7</MtouchArch>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Ad-Hoc|iPhone' ">
diff --git a/tests/bcl-test/System.Xml/System.Xml.csproj.template b/tests/bcl-test/System.Xml/System.Xml.csproj.template
index 6d43039a08a2..e52a85a09b1a 100644
--- a/tests/bcl-test/System.Xml/System.Xml.csproj.template
+++ b/tests/bcl-test/System.Xml/System.Xml.csproj.template
@@ -19,7 +19,7 @@
     <DebugType>full</DebugType>
     <Optimize>False</Optimize>
     <OutputPath>bin\iPhoneSimulator\Debug</OutputPath>
-    <DefineConstants>DEBUG;NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH</DefineConstants>
+    <DefineConstants>DEBUG;NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH;DISABLE_CAS_USE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <MtouchDebug>True</MtouchDebug>
@@ -32,7 +32,7 @@
     <DebugType>none</DebugType>
     <Optimize>True</Optimize>
     <OutputPath>bin\iPhoneSimulator\Release</OutputPath>
-    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH</DefineConstants>
+    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH;DISABLE_CAS_USE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <ConsolePause>False</ConsolePause>
@@ -45,7 +45,7 @@
     <DebugType>full</DebugType>
     <Optimize>False</Optimize>
     <OutputPath>bin\iPhone\Debug</OutputPath>
-    <DefineConstants>DEBUG;NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH</DefineConstants>
+    <DefineConstants>DEBUG;NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH;DISABLE_CAS_USE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <CodesignKey>iPhone Developer</CodesignKey>
@@ -58,20 +58,20 @@
     <DebugType>none</DebugType>
     <Optimize>True</Optimize>
     <OutputPath>bin\iPhone\Release</OutputPath>
-    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH</DefineConstants>
+    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH;DISABLE_CAS_USE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <ConsolePause>False</ConsolePause>
     <CodesignKey>iPhone Developer</CodesignKey>
     <AllowUnsafeBlocks>True</AllowUnsafeBlocks>
-    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH</DefineConstants>
+    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH;DISABLE_CAS_USE</DefineConstants>
     <MtouchArch>ARMv7</MtouchArch>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Ad-Hoc|iPhone' ">
     <DebugType>none</DebugType>
     <Optimize>True</Optimize>
     <OutputPath>bin\iPhone\Ad-Hoc</OutputPath>
-    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH</DefineConstants>
+    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH;DISABLE_CAS_USE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <ConsolePause>False</ConsolePause>
@@ -85,7 +85,7 @@
     <DebugType>none</DebugType>
     <Optimize>True</Optimize>
     <OutputPath>bin\iPhone\AppStore</OutputPath>
-    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH</DefineConstants>
+    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH;DISABLE_CAS_USE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <ConsolePause>False</ConsolePause>
diff --git a/tests/bcl-test/System/System.csproj.template b/tests/bcl-test/System/System.csproj.template
index 4e8038e4d993..ba6939a8534d 100644
--- a/tests/bcl-test/System/System.csproj.template
+++ b/tests/bcl-test/System/System.csproj.template
@@ -19,7 +19,7 @@
     <DebugType>full</DebugType>
     <Optimize>False</Optimize>
     <OutputPath>bin\iPhoneSimulator\Debug</OutputPath>
-    <DefineConstants>DEBUG;NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH</DefineConstants>
+    <DefineConstants>DEBUG;NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH;DISABLE_CAS_USE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <MtouchDebug>True</MtouchDebug>
@@ -32,7 +32,7 @@
     <DebugType>none</DebugType>
     <Optimize>True</Optimize>
     <OutputPath>bin\iPhoneSimulator\Release</OutputPath>
-    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH</DefineConstants>
+    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH;DISABLE_CAS_USE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <ConsolePause>False</ConsolePause>
@@ -45,7 +45,7 @@
     <DebugType>full</DebugType>
     <Optimize>False</Optimize>
     <OutputPath>bin\iPhone\Debug</OutputPath>
-    <DefineConstants>DEBUG;NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH</DefineConstants>
+    <DefineConstants>DEBUG;NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH;DISABLE_CAS_USE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <CodesignKey>iPhone Developer</CodesignKey>
@@ -58,7 +58,7 @@
     <DebugType>none</DebugType>
     <Optimize>True</Optimize>
     <OutputPath>bin\iPhone\Release</OutputPath>
-    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH</DefineConstants>
+    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH;DISABLE_CAS_USE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <ConsolePause>False</ConsolePause>
@@ -83,7 +83,7 @@
     <DebugType>none</DebugType>
     <Optimize>True</Optimize>
     <OutputPath>bin\iPhone\AppStore</OutputPath>
-    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH</DefineConstants>
+    <DefineConstants>NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;NET_2_1;MOBILE;MONOTOUCH;DISABLE_CAS_USE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <ConsolePause>False</ConsolePause>
diff --git a/tests/bcl-test/mscorlib/mscorlib.csproj.template b/tests/bcl-test/mscorlib/mscorlib.csproj.template
index fffaa18741a7..6ceaa3943c35 100644
--- a/tests/bcl-test/mscorlib/mscorlib.csproj.template
+++ b/tests/bcl-test/mscorlib/mscorlib.csproj.template
@@ -19,7 +19,7 @@
     <DebugType>full</DebugType>
     <Optimize>False</Optimize>
     <OutputPath>bin\iPhoneSimulator\Debug</OutputPath>
-    <DefineConstants>DEBUG;INSIDE_CORLIB;LIBC;NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;MONO_DATACONVERTER_STATIC_METHODS;NET_2_1;MOBILE;MONOTOUCH</DefineConstants>
+    <DefineConstants>DEBUG;INSIDE_CORLIB;LIBC;NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;MONO_DATACONVERTER_STATIC_METHODS;NET_2_1;MOBILE;MONOTOUCH;DISABLE_CAS_USE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <MtouchDebug>True</MtouchDebug>
@@ -32,7 +32,7 @@
     <DebugType>none</DebugType>
     <Optimize>True</Optimize>
     <OutputPath>bin\iPhoneSimulator\Release</OutputPath>
-    <DefineConstants>INSIDE_CORLIB;LIBC;NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;MONO_DATACONVERTER_STATIC_METHODS;NET_2_1;MOBILE;MONOTOUCH</DefineConstants>
+    <DefineConstants>INSIDE_CORLIB;LIBC;NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;MONO_DATACONVERTER_STATIC_METHODS;NET_2_1;MOBILE;MONOTOUCH;DISABLE_CAS_USE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <ConsolePause>False</ConsolePause>
@@ -45,7 +45,7 @@
     <DebugType>full</DebugType>
     <Optimize>False</Optimize>
     <OutputPath>bin\iPhone\Debug</OutputPath>
-    <DefineConstants>DEBUG;INSIDE_CORLIB;LIBC;NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;MONO_DATACONVERTER_STATIC_METHODS;NET_2_1;MOBILE;MONOTOUCH</DefineConstants>
+    <DefineConstants>DEBUG;INSIDE_CORLIB;LIBC;NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;MONO_DATACONVERTER_STATIC_METHODS;NET_2_1;MOBILE;MONOTOUCH;DISABLE_CAS_USE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <CodesignKey>iPhone Developer</CodesignKey>
@@ -59,13 +59,13 @@
     <DebugType>none</DebugType>
     <Optimize>True</Optimize>
     <OutputPath>bin\iPhone\Release</OutputPath>
-    <DefineConstants>INSIDE_CORLIB;LIBC;NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;MONO_DATACONVERTER_STATIC_METHODS;NET_2_1;MOBILE;MONOTOUCH</DefineConstants>
+    <DefineConstants>INSIDE_CORLIB;LIBC;NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;MONO_DATACONVERTER_STATIC_METHODS;NET_2_1;MOBILE;MONOTOUCH;DISABLE_CAS_USE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <ConsolePause>False</ConsolePause>
     <CodesignKey>iPhone Developer</CodesignKey>
     <AllowUnsafeBlocks>True</AllowUnsafeBlocks>
-    <DefineConstants>INSIDE_CORLIB;LIBC;NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;MONO_DATACONVERTER_STATIC_METHODS;NET_2_1;MOBILE;MONOTOUCH</DefineConstants>
+    <DefineConstants>INSIDE_CORLIB;LIBC;NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;MONO_DATACONVERTER_STATIC_METHODS;NET_2_1;MOBILE;MONOTOUCH;DISABLE_CAS_USE</DefineConstants>
     <MtouchI18n>cjk</MtouchI18n>
     <MtouchArch>ARMv7</MtouchArch>
   </PropertyGroup>
@@ -73,7 +73,7 @@
     <DebugType>none</DebugType>
     <Optimize>True</Optimize>
     <OutputPath>bin\iPhone\Ad-Hoc</OutputPath>
-    <DefineConstants>INSIDE_CORLIB;LIBC;NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;MONO_DATACONVERTER_STATIC_METHODS;NET_2_1;MOBILE;MONOTOUCH</DefineConstants>
+    <DefineConstants>INSIDE_CORLIB;LIBC;NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;MONO_DATACONVERTER_STATIC_METHODS;NET_2_1;MOBILE;MONOTOUCH;DISABLE_CAS_USE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <ConsolePause>False</ConsolePause>
@@ -87,7 +87,7 @@
     <DebugType>none</DebugType>
     <Optimize>True</Optimize>
     <OutputPath>bin\iPhone\AppStore</OutputPath>
-    <DefineConstants>INSIDE_CORLIB;LIBC;NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;MONO_DATACONVERTER_STATIC_METHODS;NET_2_1;MOBILE;MONOTOUCH</DefineConstants>
+    <DefineConstants>INSIDE_CORLIB;LIBC;NET_1_1;NET_2_0;NET_3_0;NET_3_5;NET_4_0;NET_4_5;MONO_DATACONVERTER_STATIC_METHODS;NET_2_1;MOBILE;MONOTOUCH;DISABLE_CAS_USE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <ConsolePause>False</ConsolePause>