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‎VB/App_Data/nwind.mdb

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‎VB/Default.aspx

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<%@ Page Language="VB" AutoEventWireup="true" CodeFile="Default.aspx.vb" Inherits="_Default" %>
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<%@ Register Assembly="DevExpress.Web.v13.1, Version=13.1.14.0, Culture=neutral, PublicKeyToken=b88d1754d700e49a"
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Namespace="DevExpress.Web" TagPrefix="dx" %>
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<html xmlns="http://www.w3.org/1999/xhtml">
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<head runat="server">
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<title>How to hide the detail button if the detail grid is empty</title>
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</head>
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<body>
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<form id="form1" runat="server">
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<div>
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<br />
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<br />
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</div>
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<dx:ASPxGridView ID="mainGrid" runat="server" AutoGenerateColumns="False" DataSourceID="masterDataSource"
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KeyFieldName="CategoryID" OnDataBinding="masterGrid_DataBinding" OnDetailRowGetButtonVisibility="masterGrid_DetailRowGetButtonVisibility">
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<Templates>
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<DetailRow>
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<dx:ASPxGridView ID="detailGrid" runat="server" AutoGenerateColumns="False" DataSourceID="dsDetail"
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KeyFieldName="ProductID" OnBeforePerformDataSelect="detailGrid_BeforePerformDataSelect"
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Width="100%">
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<Styles>
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<DetailRow HorizontalAlign="Justify">
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</DetailRow>
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</Styles>
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<Columns>
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<dx:GridViewDataTextColumn FieldName="ProductID" ReadOnly="True" VisibleIndex="0">
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<EditFormSettings Visible="False" />
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</dx:GridViewDataTextColumn>
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<dx:GridViewDataTextColumn FieldName="ProductName" VisibleIndex="1">
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</dx:GridViewDataTextColumn>
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<dx:GridViewDataTextColumn FieldName="UnitPrice" VisibleIndex="2">
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</dx:GridViewDataTextColumn>
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</Columns>
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</dx:ASPxGridView>
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</DetailRow>
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</Templates>
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<Columns>
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<dx:GridViewDataTextColumn FieldName="CategoryID" ReadOnly="True" VisibleIndex="0">
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<EditFormSettings Visible="False" />
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</dx:GridViewDataTextColumn>
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<dx:GridViewDataTextColumn FieldName="CategoryName" VisibleIndex="1">
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</dx:GridViewDataTextColumn>
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<dx:GridViewDataTextColumn FieldName="Description" VisibleIndex="2">
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</dx:GridViewDataTextColumn>
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</Columns>
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<SettingsDetail ShowDetailRow="True" />
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</dx:ASPxGridView>
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<asp:AccessDataSource ID="dsDetail" runat="server" DataFile="~/App_Data/nwind.mdb"
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SelectCommand="SELECT [ProductID], [ProductName], [CategoryID], [UnitPrice] FROM [Products] WHERE ([CategoryID] = ?)">
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<SelectParameters>
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<asp:SessionParameter DefaultValue="CategoryID" Name="CategoryID" SessionField="CategoryID"
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Type="Int32" />
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</SelectParameters>
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</asp:AccessDataSource>
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<asp:AccessDataSource ID="masterDataSource" runat="server" DataFile="~/App_Data/nwind.mdb"
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SelectCommand="SELECT * FROM [Categories]"></asp:AccessDataSource>
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</form>
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</body>
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</html>

‎VB/Default.aspx.vb

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Imports System
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Imports System.Collections.Generic
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Imports System.Linq
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Imports System.Web
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Imports System.Web.UI
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Imports System.Web.UI.WebControls
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Imports DevExpress.Web
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Imports DevExpress.Web.Data
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Imports System.Drawing
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Imports System.Collections
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Imports System.Data
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Partial Public Class _Default
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Inherits System.Web.UI.Page
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Protected Sub masterGrid_DataBinding(ByVal sender As Object, ByVal e As EventArgs)
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DoSelect(masterDataSource.DataFile)
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End Sub
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Private Sub DoSelect(ByVal connectionString As String)
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Dim selectResult As New DataView()
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Dim selectCommand As String = "select distinct [CategoryID] from [Products]"
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Using ds As New AccessDataSource(connectionString, selectCommand)
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selectResult = CType(ds.Select(DataSourceSelectArguments.Empty), DataView)
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End Using
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Dim result As New ArrayList()
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For Each row As DataRow In selectResult.Table.Rows
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result.Add(row("CategoryID"))
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Next row
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Session("SelectResult") = result
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End Sub
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Protected Sub masterGrid_DetailRowGetButtonVisibility(ByVal sender As Object, ByVal e As ASPxGridViewDetailRowButtonEventArgs)
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If Not CType(Session("SelectResult"), ArrayList).Contains(e.KeyValue) Then
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e.ButtonState = GridViewDetailRowButtonState.Hidden
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End If
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End Sub
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Protected Sub detailGrid_BeforePerformDataSelect(ByVal sender As Object, ByVal e As EventArgs)
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Session("CategoryID") = (TryCast(sender, ASPxGridView)).GetMasterRowKeyValue()
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End Sub
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End Class

‎VB/Solution.sln

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Microsoft Visual Studio Solution File, Format Version 11.00
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# Visual Studio 2010
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Project("{E24C65DC-7377-472B-9ABA-BC803B73C61A}") = "WebSite", ".", "{E7100136-FDA4-46DF-B114-8F6ECC7C2DF8}"
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ProjectSection(WebsiteProperties) = preProject
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TargetFrameworkMoniker = ".NETFramework,Version%3Dv4.0"
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Debug.AspNetCompiler.VirtualPath = "/WebSite"
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Debug.AspNetCompiler.PhysicalPath = "."
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Debug.AspNetCompiler.TargetPath = "PrecompiledWeb\WebSite\"
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Debug.AspNetCompiler.Updateable = "true"
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Debug.AspNetCompiler.ForceOverwrite = "true"
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Debug.AspNetCompiler.FixedNames = "false"
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Debug.AspNetCompiler.Debug = "True"
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Release.AspNetCompiler.VirtualPath = "/WebSite"
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Release.AspNetCompiler.PhysicalPath = "."
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Release.AspNetCompiler.TargetPath = "PrecompiledWeb\WebSite\"
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Release.AspNetCompiler.Updateable = "true"
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Release.AspNetCompiler.ForceOverwrite = "true"
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Release.AspNetCompiler.FixedNames = "false"
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Release.AspNetCompiler.Debug = "False"
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VWDPort = "2101"
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EndProjectSection
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EndProject
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Global
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GlobalSection(SolutionConfigurationPlatforms) = preSolution
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Debug|.NET = Debug|.NET
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EndGlobalSection
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GlobalSection(ProjectConfigurationPlatforms) = postSolution
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{E7100136-FDA4-46DF-B114-8F6ECC7C2DF8}.Debug|.NET.ActiveCfg = Debug|.NET
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{E7100136-FDA4-46DF-B114-8F6ECC7C2DF8}.Debug|.NET.Build.0 = Debug|.NET
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EndGlobalSection
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GlobalSection(SolutionProperties) = preSolution
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HideSolutionNode = FALSE
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EndGlobalSection
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EndGlobal

‎VB/web.config

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<?xml version="1.0" encoding="utf-8"?>
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<!--
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Note: As an alternative to hand editing this file you can use the
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web admin tool to configure settings for your application. Use
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the Website->Asp.Net Configuration option in Visual Studio.
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A full list of settings and comments can be found in
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machine.config.comments usually located in
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\Windows\Microsoft.Net\Framework\v2.x\Config
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-->
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<configuration>
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<configSections>
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<sectionGroup name="devExpress">
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<section name="compression" type="DevExpress.Web.CompressionConfigurationSection, DevExpress.Web.v13.1, Version=13.1.14.0, Culture=neutral, PublicKeyToken=b88d1754d700e49a" requirePermission="false" />
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<section name="themes" type="DevExpress.Web.ThemesConfigurationSection, DevExpress.Web.v13.1, Version=13.1.14.0, Culture=neutral, PublicKeyToken=b88d1754d700e49a" requirePermission="false" />
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<section name="errors" type="DevExpress.Web.ErrorsConfigurationSection, DevExpress.Web.v13.1, Version=13.1.14.0, Culture=neutral, PublicKeyToken=b88d1754d700e49a" requirePermission="false" />
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</sectionGroup>
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</configSections>
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<appSettings />
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<connectionStrings />
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<system.web>
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<!--
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Set compilation debug="true" to insert debugging
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symbols into the compiled page. Because this
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affects performance, set this value to true only
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during development.
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-->
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<compilation targetFramework="4.0" debug="true">
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<assemblies>
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<add assembly="System.Core, Version=3.5.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089" />
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<add assembly="System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />
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<add assembly="System.Data.DataSetExtensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089" />
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<add assembly="System.Xml.Linq, Version=3.5.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089" />
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<add assembly="DevExpress.Web.v13.1, Version=13.1.14.0, Culture=neutral, PublicKeyToken=B88D1754D700E49A" />
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<add assembly="System.Windows.Forms, Version=2.0.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089" />
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<add assembly="System.Design, Version=2.0.0.0, Culture=neutral, PublicKeyToken=B03F5F7F11D50A3A" />
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<add assembly="DevExpress.Printing.v13.1.Core, Version=13.1.14.0, Culture=neutral, PublicKeyToken=B88D1754D700E49A" />
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<add assembly="DevExpress.Data.v13.1, Version=13.1.14.0, Culture=neutral, PublicKeyToken=B88D1754D700E49A" />
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<add assembly="DevExpress.RichEdit.v13.1.Core, Version=13.1.14.0, Culture=neutral, PublicKeyToken=B88D1754D700E49A" />
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<add assembly="DevExpress.Docs.v13.1, Version=13.1.14.0, Culture=neutral, PublicKeyToken=B88D1754D700E49A" />
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</assemblies>
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</compilation>
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<!--
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The <authentication> section enables configuration
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of the security authentication mode used by
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ASP.NET to identify an incoming user.
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-->
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<authentication mode="Windows" />
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<!--
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The <customErrors> section enables configuration
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of what to do if/when an unhandled error occurs
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during the execution of a request. Specifically,
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it enables developers to configure html error pages
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to be displayed in place of a error stack trace.
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<customErrors mode="RemoteOnly" defaultRedirect="GenericErrorPage.htm">
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<error statusCode="403" redirect="NoAccess.htm" />
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<error statusCode="404" redirect="FileNotFound.htm" />
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</customErrors>
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-->
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<pages>
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<controls>
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<add tagPrefix="asp" namespace="System.Web.UI" assembly="System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />
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<add tagPrefix="asp" namespace="System.Web.UI.WebControls" assembly="System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />
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</controls>
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</pages>
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<httpHandlers>
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<remove verb="*" path="*.asmx" />
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<add verb="*" path="*.asmx" validate="false" type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />
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<add verb="*" path="*_AppService.axd" validate="false" type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />
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<add verb="GET,HEAD" path="ScriptResource.axd" type="System.Web.Handlers.ScriptResourceHandler, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" validate="false" />
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<add verb="GET,POST" path="ASPxUploadProgressHandlerPage.ashx" type="DevExpress.Web.ASPxUploadProgressHttpHandler, DevExpress.Web.v13.1, Version=13.1.14.0, Culture=neutral, PublicKeyToken=b88d1754d700e49a" />
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</httpHandlers>
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<httpModules>
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<add name="ScriptModule" type="System.Web.Handlers.ScriptModule, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />
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<add type="DevExpress.Web.ASPxHttpHandlerModule, DevExpress.Web.v13.1, Version=13.1.14.0, Culture=neutral, PublicKeyToken=b88d1754d700e49a" name="ASPxHttpHandlerModule" />
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</httpModules>
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</system.web>
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<system.codedom>
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<compilers>
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<compiler language="c#;cs;csharp" extension=".cs" warningLevel="4" type="Microsoft.CSharp.CSharpCodeProvider, System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089">
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<providerOption name="CompilerVersion" value="v4.0" />
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<providerOption name="WarnAsError" value="false" />
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</compiler>
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<compiler language="vb;vbs;visualbasic;vbscript" extension=".vb" warningLevel="4" type="Microsoft.VisualBasic.VBCodeProvider, System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089">
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<providerOption name="CompilerVersion" value="v4.0" />
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<providerOption name="OptionInfer" value="true" />
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<providerOption name="WarnAsError" value="false" />
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</compiler>
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</compilers>
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</system.codedom>
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<!--
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The system.webServer section is required for running ASP.NET AJAX under Internet
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Information Services 7.0. It is not necessary for previous version of IIS.
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-->
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<system.webServer>
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<validation validateIntegratedModeConfiguration="false" />
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<modules>
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<remove name="ScriptModule" />
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<add name="ScriptModule" preCondition="managedHandler" type="System.Web.Handlers.ScriptModule, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />
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<add type="DevExpress.Web.ASPxHttpHandlerModule, DevExpress.Web.v13.1, Version=13.1.14.0, Culture=neutral, PublicKeyToken=b88d1754d700e49a" name="ASPxHttpHandlerModule" />
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</modules>
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<handlers>
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<remove name="WebServiceHandlerFactory-Integrated" />
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<remove name="ScriptHandlerFactory" />
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<remove name="ScriptHandlerFactoryAppServices" />
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<remove name="ScriptResource" />
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<add name="ScriptHandlerFactory" verb="*" path="*.asmx" preCondition="integratedMode" type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />
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<add name="ScriptHandlerFactoryAppServices" verb="*" path="*_AppService.axd" preCondition="integratedMode" type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />
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<add name="ScriptResource" preCondition="integratedMode" verb="GET,HEAD" path="ScriptResource.axd" type="System.Web.Handlers.ScriptResourceHandler, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />
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<add name="ASPxUploadProgressHandler" preCondition="integratedMode" verb="GET,POST" path="ASPxUploadProgressHandlerPage.ashx" type="DevExpress.Web.ASPxUploadProgressHttpHandler, DevExpress.Web.v13.1, Version=13.1.14.0, Culture=neutral, PublicKeyToken=b88d1754d700e49a" />
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</handlers>
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</system.webServer>
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<runtime>
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<assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
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<dependentAssembly>
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<assemblyIdentity name="System.Web.Extensions" publicKeyToken="31bf3856ad364e35" />
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<bindingRedirect oldVersion="1.0.0.0-1.1.0.0" newVersion="3.5.0.0" />
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</dependentAssembly>
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<dependentAssembly>
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<assemblyIdentity name="System.Web.Extensions.Design" publicKeyToken="31bf3856ad364e35" />
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<bindingRedirect oldVersion="1.0.0.0-1.1.0.0" newVersion="3.5.0.0" />
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</dependentAssembly>
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</assemblyBinding>
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</runtime>
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<devExpress>
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<compression enableHtmlCompression="false" enableCallbackCompression="true" enableResourceCompression="true" enableResourceMerging="false" />
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<themes enableThemesAssembly="true" />
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<errors callbackErrorRedirectUrl="" />
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</devExpress>
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</configuration>

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