diff --git a/AutoRest/Generators/CSharp/Azure.CSharp/AzureCSharpCodeGenerator.cs b/AutoRest/Generators/CSharp/Azure.CSharp/AzureCSharpCodeGenerator.cs
index 5c7f0b5bb3..85f9fe326a 100644
--- a/AutoRest/Generators/CSharp/Azure.CSharp/AzureCSharpCodeGenerator.cs
+++ b/AutoRest/Generators/CSharp/Azure.CSharp/AzureCSharpCodeGenerator.cs
@@ -99,7 +99,7 @@ public override async Task Generate(ServiceClient serviceClient)
             {
                 var extensionsTemplate = new ExtensionsTemplate
                 {
-                    Model = new AzureExtensionsTemplateModel(serviceClient, null),
+                    Model = new AzureExtensionsTemplateModel(serviceClient, null, SyncWrappers),
                 };
                 await Write(extensionsTemplate, serviceClient.Name + "Extensions.cs");
             }
@@ -124,7 +124,7 @@ public override async Task Generate(ServiceClient serviceClient)
                 // Service client extensions
                 var operationExtensionsTemplate = new ExtensionsTemplate
                 {
-                    Model = new AzureExtensionsTemplateModel(serviceClient, group),
+                    Model = new AzureExtensionsTemplateModel(serviceClient, group, SyncWrappers),
                 };
                 await Write(operationExtensionsTemplate, operationExtensionsTemplate.Model.ExtensionName + "Extensions.cs");
 
diff --git a/AutoRest/Generators/CSharp/Azure.CSharp/TemplateModels/AzureExtensionsTemplateModel.cs b/AutoRest/Generators/CSharp/Azure.CSharp/TemplateModels/AzureExtensionsTemplateModel.cs
index 61dcf09a9f..8dcb1228f5 100644
--- a/AutoRest/Generators/CSharp/Azure.CSharp/TemplateModels/AzureExtensionsTemplateModel.cs
+++ b/AutoRest/Generators/CSharp/Azure.CSharp/TemplateModels/AzureExtensionsTemplateModel.cs
@@ -12,12 +12,12 @@ namespace Microsoft.Rest.Generator.CSharp.Azure
 {
     public class AzureExtensionsTemplateModel : ExtensionsTemplateModel
     {
-        public AzureExtensionsTemplateModel(ServiceClient serviceClient, string operationName)
-            : base(serviceClient, operationName)
+        public AzureExtensionsTemplateModel(ServiceClient serviceClient, string operationName, SyncWrapperGenerationMode syncWrappers)
+            : base(serviceClient, operationName, syncWrappers)
         {
             MethodTemplateModels.Clear();
             Methods.Where(m => m.Group == operationName)
-                .ForEach(m => MethodTemplateModels.Add(new AzureMethodTemplateModel(m, serviceClient)));
+                .ForEach(m => MethodTemplateModels.Add(new AzureMethodTemplateModel(m, serviceClient, syncWrappers)));
             if (ExtensionName != Name)
             {
                 ExtensionName = ExtensionName + "Operations";
diff --git a/AutoRest/Generators/CSharp/Azure.CSharp/TemplateModels/AzureMethodGroupTemplateModel.cs b/AutoRest/Generators/CSharp/Azure.CSharp/TemplateModels/AzureMethodGroupTemplateModel.cs
index 62f94ccf92..ecadbc1708 100644
--- a/AutoRest/Generators/CSharp/Azure.CSharp/TemplateModels/AzureMethodGroupTemplateModel.cs
+++ b/AutoRest/Generators/CSharp/Azure.CSharp/TemplateModels/AzureMethodGroupTemplateModel.cs
@@ -20,7 +20,7 @@ public AzureMethodGroupTemplateModel(ServiceClient serviceClient, string methodG
             // AzureMethodTemplateModel
             MethodTemplateModels.Clear();
             Methods.Where(m => m.Group == methodGroupName)
-                .ForEach(m => MethodTemplateModels.Add(new AzureMethodTemplateModel(m, serviceClient)));
+                .ForEach(m => MethodTemplateModels.Add(new AzureMethodTemplateModel(m, serviceClient, SyncWrapperGenerationMode.None)));
         }
 
         /// <summary>
diff --git a/AutoRest/Generators/CSharp/Azure.CSharp/TemplateModels/AzureMethodTemplateModel.cs b/AutoRest/Generators/CSharp/Azure.CSharp/TemplateModels/AzureMethodTemplateModel.cs
index 1a2b58cc1a..e393a7d502 100644
--- a/AutoRest/Generators/CSharp/Azure.CSharp/TemplateModels/AzureMethodTemplateModel.cs
+++ b/AutoRest/Generators/CSharp/Azure.CSharp/TemplateModels/AzureMethodTemplateModel.cs
@@ -15,8 +15,8 @@ namespace Microsoft.Rest.Generator.CSharp.Azure
 {
     public class AzureMethodTemplateModel : MethodTemplateModel
     {
-        public AzureMethodTemplateModel(Method source, ServiceClient serviceClient)
-            : base(source, serviceClient)
+        public AzureMethodTemplateModel(Method source, ServiceClient serviceClient, SyncWrapperGenerationMode syncWrappers)
+            : base(source, serviceClient, syncWrappers)
         {
             if (source == null)
             {
@@ -54,7 +54,7 @@ public AzureMethodTemplateModel GetMethod
                         Resources.InvalidLongRunningOperationForCreateOrUpdate,
                             Name, Group));
                 }
-                return new AzureMethodTemplateModel(getMethod, ServiceClient);
+                return new AzureMethodTemplateModel(getMethod, ServiceClient, SyncWrappers);
             }
         }
 
diff --git a/AutoRest/Generators/CSharp/Azure.CSharp/TemplateModels/AzureServiceClientTemplateModel.cs b/AutoRest/Generators/CSharp/Azure.CSharp/TemplateModels/AzureServiceClientTemplateModel.cs
index 6a01deec30..a790ba0367 100644
--- a/AutoRest/Generators/CSharp/Azure.CSharp/TemplateModels/AzureServiceClientTemplateModel.cs
+++ b/AutoRest/Generators/CSharp/Azure.CSharp/TemplateModels/AzureServiceClientTemplateModel.cs
@@ -18,7 +18,7 @@ public AzureServiceClientTemplateModel(ServiceClient serviceClient, bool interna
             // TODO: Initialized in the base constructor. Why Clear it?
             MethodTemplateModels.Clear();
             Methods.Where(m => m.Group == null)
-                .ForEach(m => MethodTemplateModels.Add(new AzureMethodTemplateModel(m, serviceClient)));
+                .ForEach(m => MethodTemplateModels.Add(new AzureMethodTemplateModel(m, serviceClient, SyncWrapperGenerationMode.None)));
         }
 
         /// <summary>
diff --git a/AutoRest/Generators/CSharp/CSharp/CSharpCodeGenerator.cs b/AutoRest/Generators/CSharp/CSharp/CSharpCodeGenerator.cs
index b43de08e36..8655910279 100644
--- a/AutoRest/Generators/CSharp/CSharp/CSharpCodeGenerator.cs
+++ b/AutoRest/Generators/CSharp/CSharp/CSharpCodeGenerator.cs
@@ -29,6 +29,12 @@ public CSharpCodeGenerator(Settings settings) : base(settings)
         [SettingsAlias("internal")]
         public bool InternalConstructors { get; set; }
 
+        /// <summary>
+        /// Specifies mode for generating sync wrappers.
+        /// </summary>
+        [SettingsInfo("Specifies mode for generating sync wrappers.")]
+        public SyncWrapperGenerationMode SyncWrappers { get; set; }
+
         public override string Name
         {
             get { return "CSharp"; }
@@ -106,7 +112,7 @@ public override async Task Generate(ServiceClient serviceClient)
             {
                 var extensionsTemplate = new ExtensionsTemplate
                 {
-                    Model = new ExtensionsTemplateModel(serviceClient, null),
+                    Model = new ExtensionsTemplateModel(serviceClient, null, SyncWrappers),
                 };
                 await Write(extensionsTemplate, serviceClient.Name + "Extensions.cs");
             }
@@ -131,7 +137,7 @@ public override async Task Generate(ServiceClient serviceClient)
                 // Service client extensions
                 var operationExtensionsTemplate = new ExtensionsTemplate
                 {
-                    Model = new ExtensionsTemplateModel(serviceClient, group),
+                    Model = new ExtensionsTemplateModel(serviceClient, group, SyncWrappers),
                 };
                 await Write(operationExtensionsTemplate, group + "Extensions.cs");
 
diff --git a/AutoRest/Generators/CSharp/CSharp/SyncWrapperGenerationMode.cs b/AutoRest/Generators/CSharp/CSharp/SyncWrapperGenerationMode.cs
index a5112f2b2e..72e4088bb8 100644
--- a/AutoRest/Generators/CSharp/CSharp/SyncWrapperGenerationMode.cs
+++ b/AutoRest/Generators/CSharp/CSharp/SyncWrapperGenerationMode.cs
@@ -9,8 +9,8 @@ namespace Microsoft.Rest.Generator.CSharp
     /// </summary>
     public enum SyncWrapperGenerationMode
     {
-        All = 0,
-        Essential = 1,
-        None = 2
+        Essential,
+        All,
+        None
     }
 }
diff --git a/AutoRest/Generators/CSharp/CSharp/TemplateModels/ExtensionsTemplateModel.cs b/AutoRest/Generators/CSharp/CSharp/TemplateModels/ExtensionsTemplateModel.cs
index a6b969b363..287311fe27 100644
--- a/AutoRest/Generators/CSharp/CSharp/TemplateModels/ExtensionsTemplateModel.cs
+++ b/AutoRest/Generators/CSharp/CSharp/TemplateModels/ExtensionsTemplateModel.cs
@@ -10,13 +10,13 @@ namespace Microsoft.Rest.Generator.CSharp
 {
     public class ExtensionsTemplateModel : ServiceClient
     {
-        public ExtensionsTemplateModel(ServiceClient serviceClient, string operationName)
+        public ExtensionsTemplateModel(ServiceClient serviceClient, string operationName, SyncWrapperGenerationMode syncWrappers)
         {
             this.LoadFrom(serviceClient);
             MethodTemplateModels = new List<MethodTemplateModel>();
             ExtensionName = operationName ?? this.Name;
             this.Methods.Where(m => m.Group == operationName)
-                .ForEach(m => MethodTemplateModels.Add(new MethodTemplateModel(m, serviceClient)));
+                .ForEach(m => MethodTemplateModels.Add(new MethodTemplateModel(m, serviceClient, syncWrappers)));
         }
 
 
diff --git a/AutoRest/Generators/CSharp/CSharp/TemplateModels/MethodGroupTemplateModel.cs b/AutoRest/Generators/CSharp/CSharp/TemplateModels/MethodGroupTemplateModel.cs
index 3a12b4da9a..9c4c3ebcc3 100644
--- a/AutoRest/Generators/CSharp/CSharp/TemplateModels/MethodGroupTemplateModel.cs
+++ b/AutoRest/Generators/CSharp/CSharp/TemplateModels/MethodGroupTemplateModel.cs
@@ -19,7 +19,7 @@ public MethodGroupTemplateModel(ServiceClient serviceClient, string methodGroupN
             MethodGroupName = methodGroupName;
             MethodGroupType = methodGroupName;
             Methods.Where(m => m.Group == MethodGroupName)
-                .ForEach(m => MethodTemplateModels.Add(new MethodTemplateModel(m, serviceClient)));
+                .ForEach(m => MethodTemplateModels.Add(new MethodTemplateModel(m, serviceClient, SyncWrapperGenerationMode.None)));
         }
 
         public List<MethodTemplateModel> MethodTemplateModels { get; private set; }
diff --git a/AutoRest/Generators/CSharp/CSharp/TemplateModels/MethodTemplateModel.cs b/AutoRest/Generators/CSharp/CSharp/TemplateModels/MethodTemplateModel.cs
index c27bb73925..a5bfcd56b3 100644
--- a/AutoRest/Generators/CSharp/CSharp/TemplateModels/MethodTemplateModel.cs
+++ b/AutoRest/Generators/CSharp/CSharp/TemplateModels/MethodTemplateModel.cs
@@ -14,9 +14,10 @@ namespace Microsoft.Rest.Generator.CSharp
 {
     public class MethodTemplateModel : Method
     {
-        public MethodTemplateModel(Method source, ServiceClient serviceClient)
+        public MethodTemplateModel(Method source, ServiceClient serviceClient, SyncWrapperGenerationMode syncWrappers)
         {
             this.LoadFrom(source);
+            SyncWrappers = syncWrappers;
             ParameterTemplateModels = new List<ParameterTemplateModel>();
             LogicalParameterTemplateModels = new List<ParameterTemplateModel>();
             source.Parameters.ForEach(p => ParameterTemplateModels.Add(new ParameterTemplateModel(p)));
@@ -30,6 +31,8 @@ public MethodTemplateModel(Method source, ServiceClient serviceClient)
 
         public bool IsCustomBaseUri { get; private set; }
 
+        public SyncWrapperGenerationMode SyncWrappers { get; private set; }
+
         public ServiceClient ServiceClient { get; set; }
 
         public List<ParameterTemplateModel> ParameterTemplateModels { get; private set; }
diff --git a/AutoRest/Generators/CSharp/CSharp/TemplateModels/ServiceClientTemplateModel.cs b/AutoRest/Generators/CSharp/CSharp/TemplateModels/ServiceClientTemplateModel.cs
index f8c2d1174d..b38f1db38b 100644
--- a/AutoRest/Generators/CSharp/CSharp/TemplateModels/ServiceClientTemplateModel.cs
+++ b/AutoRest/Generators/CSharp/CSharp/TemplateModels/ServiceClientTemplateModel.cs
@@ -16,7 +16,7 @@ public ServiceClientTemplateModel(ServiceClient serviceClient, bool internalCons
             this.LoadFrom(serviceClient);
             MethodTemplateModels = new List<MethodTemplateModel>();
             Methods.Where(m => m.Group == null)
-                .ForEach(m => MethodTemplateModels.Add(new MethodTemplateModel(m, serviceClient)));
+                .ForEach(m => MethodTemplateModels.Add(new MethodTemplateModel(m, serviceClient, SyncWrapperGenerationMode.None)));
             ConstructorVisibility = internalConstructors ? "internal" : "public";
             this.IsCustomBaseUri = serviceClient.Extensions.ContainsKey(Microsoft.Rest.Generator.Extensions.ParameterizedHostExtension);
         }
diff --git a/AutoRest/Generators/CSharp/CSharp/Templates/ExtensionMethodTemplate.cshtml b/AutoRest/Generators/CSharp/CSharp/Templates/ExtensionMethodTemplate.cshtml
index c831d5619b..d2531c48e3 100644
--- a/AutoRest/Generators/CSharp/CSharp/Templates/ExtensionMethodTemplate.cshtml
+++ b/AutoRest/Generators/CSharp/CSharp/Templates/ExtensionMethodTemplate.cshtml
@@ -6,25 +6,27 @@
 @using Microsoft.Rest.Generator.Utilities
 @inherits Microsoft.Rest.Generator.Template<Microsoft.Rest.Generator.CSharp.MethodTemplateModel>
 @{
-@if (!String.IsNullOrEmpty(Model.Description) || !String.IsNullOrEmpty(Model.Summary))
+if (Model.SyncWrappers == SyncWrapperGenerationMode.All || Model.SyncWrappers == SyncWrapperGenerationMode.Essential)
 {
+    if (!String.IsNullOrEmpty(Model.Description) || !String.IsNullOrEmpty(Model.Summary))
+    {
 @:/// <summary>
 @:@WrapComment("/// ", String.IsNullOrEmpty(Model.Summary) ? Model.Description.EscapeXmlComment() : Model.Summary.EscapeXmlComment())
 @:/// </summary>
-}
-@if (!String.IsNullOrEmpty(Model.Description) && !String.IsNullOrEmpty(Model.Summary))
-{
+    }
+    if (!String.IsNullOrEmpty(Model.Description) && !String.IsNullOrEmpty(Model.Summary))
+    {
 @:@WrapComment("/// ", Model.Description.EscapeXmlComment())
-}
+    }
 @:/// <param name='operations'>
 @:/// The operations group for this extension method.
 @:/// </param>
-foreach (var parameter in Model.LocalParameters)
-{
+    foreach (var parameter in Model.LocalParameters)
+    {
 @:/// <param name='@parameter.Name'>
 @:@WrapComment("/// ", parameter.Documentation.EscapeXmlComment())
 @:/// </param>
-}
+    }
 @:public static @Model.ReturnTypeString @(Model.Name)(@Model.GetExtensionParameters(Model.SyncMethodParameterDeclaration))
 @:{
     if (Model.ReturnType.Body != null)
@@ -40,15 +42,16 @@ foreach (var parameter in Model.LocalParameters)
     @:Task.Factory.StartNew(s => ((I@(Model.MethodGroupName))s).@(Model.Name)Async(@(Model.SyncMethodInvocationArgs)), operations, CancellationToken.None, TaskCreationOptions.None, TaskScheduler.Default).Unwrap().GetAwaiter().GetResult();
     }
 @:}
-
 @EmptyLine
-@if (!String.IsNullOrEmpty(Model.Description) || !String.IsNullOrEmpty(Model.Summary))
+}
+
+if (!String.IsNullOrEmpty(Model.Description) || !String.IsNullOrEmpty(Model.Summary))
 {
 @:/// <summary>
 @:@WrapComment("/// ", String.IsNullOrEmpty(Model.Summary) ? Model.Description.EscapeXmlComment() : Model.Summary.EscapeXmlComment())
 @:/// </summary>
 }
-@if (!String.IsNullOrEmpty(Model.Description) && !String.IsNullOrEmpty(Model.Summary))
+if (!String.IsNullOrEmpty(Model.Description) && !String.IsNullOrEmpty(Model.Summary))
 {
 @:@WrapComment("/// ", Model.Description.EscapeXmlComment())
 }
@@ -95,26 +98,28 @@ foreach (var parameter in Model.LocalParameters)
     }
 @:}
 
-@EmptyLine
-@if (!String.IsNullOrEmpty(Model.Description) || !String.IsNullOrEmpty(Model.Summary))
+if (Model.SyncWrappers == SyncWrapperGenerationMode.All)
 {
+@EmptyLine
+    if (!String.IsNullOrEmpty(Model.Description) || !String.IsNullOrEmpty(Model.Summary))
+    {
 @:/// <summary>
 @:@WrapComment("/// ", String.IsNullOrEmpty(Model.Summary) ? Model.Description.EscapeXmlComment() : Model.Summary.EscapeXmlComment())
 @:/// </summary>
-}
-@if (!String.IsNullOrEmpty(Model.Description) && !String.IsNullOrEmpty(Model.Summary))
-{
+    }
+    if (!String.IsNullOrEmpty(Model.Description) && !String.IsNullOrEmpty(Model.Summary))
+    {
 @:@WrapComment("/// ", Model.Description.EscapeXmlComment())
-}
+    }
 @:/// <param name='operations'>
 @:/// The operations group for this extension method.
 @:/// </param>
-foreach (var parameter in Model.LocalParameters)
-{
+    foreach (var parameter in Model.LocalParameters)
+    {
 @:/// <param name='@parameter.Name'>
 @:@WrapComment("/// ", parameter.Documentation.EscapeXmlComment())
 @:/// </param>
-}
+    }
 @:/// <param name='customHeaders'>
 @:/// Headers that will be added to request.
 @:/// </param>
@@ -123,4 +128,5 @@ foreach (var parameter in Model.LocalParameters)
 @:    return operations.@(Model.Name)WithHttpMessagesAsync(@(Model.GetAsyncMethodInvocationArgs("customHeaders", "CancellationToken.None"))).ConfigureAwait(false).GetAwaiter().GetResult();
 @:}
 @:
-}
+    }
+}
\ No newline at end of file