Replace remaining DataMember references

Author: Caitlin Bales (MSFT)

Templates/CSharp/Requests/EntityCollectionResponse.cs.tt

@@ -19,13 +19,19 @@ namespace <#=prop.Class.AsOdcmClass().Namespace.GetNamespaceName()#>
     /// <summary>
     /// The type <#=collectionResponse#>.
     /// </summary>
-    [DataContract]
+    [JsonObject(MemberSerialization = MemberSerialization.OptIn)]
+<# 
+// We only want to add the derived type converter to the classes at the top of the inheritance hierarchy
+if (prop.Class.Derived != null && prop.Class.Base == null)
+{ #>
+    [JsonConverter(typeof(DerivedTypeConverter))]
+<# } #>
     public class <#=collectionResponse#>
     {
         /// <summary>
         /// Gets or sets the <see cref="I<#=collectionPage#>"/> value.
         /// </summary>
-        [DataMember(Name = "value", EmitDefaultValue = false, IsRequired = false)]
+		[JsonProperty(NullValueHandling = NullValueHandling.Ignore, PropertyName ="value", Required = Required.Default)]
         public I<#=collectionPage#> Value { get; set; }
 
         /// <summary>

Templates/CSharp/Requests/EntityCollectionWithReferencesResponse.cs.tt

@@ -19,13 +19,19 @@ namespace <#=prop.Class.AsOdcmClass().Namespace.GetNamespaceName()#>
     /// <summary>
     /// The type <#=collectionResponse#>.
     /// </summary>
-    [DataContract]
+    [JsonObject(MemberSerialization = MemberSerialization.OptIn)]
+<# 
+// We only want to add the derived type converter to the classes at the top of the inheritance hierarchy
+if (prop.Class.Derived != null && prop.Class.Base == null)
+{ #>
+    [JsonConverter(typeof(DerivedTypeConverter))]
+<# } #>
     public class <#=collectionResponse#>
     {
         /// <summary>
         /// Gets or sets the <see cref="I<#=collectionPage#>"/> value.
         /// </summary>
-        [DataMember(Name = "value", EmitDefaultValue = false, IsRequired = false)]
+		[JsonProperty(NullValueHandling = NullValueHandling.Ignore, PropertyName ="value", Required = Required.Default)]
         public I<#=collectionPage#> Value { get; set; }
 
         /// <summary>

Templates/CSharp/Requests/MethodCollectionResponse.cs.tt

@@ -22,13 +22,13 @@ namespace <#=method.Namespace.GetNamespaceName()#>
     /// <summary>
     /// The type <#=collectionResponse#>.
     /// </summary>
-    [DataContract]
+    [JsonObject(MemberSerialization = MemberSerialization.OptIn)]
     public class <#=collectionResponse#>
     {
         /// <summary>
         /// Gets or sets the <see cref="I<#=collectionPage#>"/> value.
         /// </summary>
-        [DataMember(Name = "value", EmitDefaultValue = false, IsRequired = false)]
+        [JsonProperty(NullValueHandling = NullValueHandling.Ignore, PropertyName ="value", Required = Required.Default)]
         public I<#=collectionPage#> Value { get; set; }
         <#
         if (isSpecialCollection)
@@ -44,7 +44,7 @@ namespace <#=method.Namespace.GetNamespaceName()#>
         /// <summary>
         /// Gets or sets the <#=propertyName#>.
         /// </summary>
-        [DataMember(Name = "<#=property.Name#>", EmitDefaultValue = false, IsRequired = false)]
+		[JsonProperty(NullValueHandling = NullValueHandling.Ignore, PropertyName ="<#=property.Name#>", Required = Required.Default)]
         public <#=propertyType#> <#=propertyName#> { get; set; }
         <#
                 }