Fixing bug causing dups

Author: glennblock

src/WebApiContrib.CollectionJson/ExtensibleObject.cs

@@ -12,15 +12,17 @@ public abstract class ExtensibleObject : DynamicObject
     {
         public ExtensibleObject()
         {
-            Members = new Dictionary<string, object>(StringComparer.CurrentCultureIgnoreCase);
+            Members = new Dictionary<string, object>();
+            DynamicMembers = new Dictionary<string, object>(StringComparer.CurrentCultureIgnoreCase);
         }
 
-        protected IDictionary<string, object> Members { get; private set; } 
+        protected IDictionary<string, object> Members { get; private set; }
+        protected IDictionary<string, object> DynamicMembers { get; private set; } 
 
         public override bool TryGetMember(GetMemberBinder binder, out object result)
         {
             var name = binder.Name;
-            var found = Members.TryGetValue(name, out result);
+            var found = DynamicMembers.TryGetValue(name, out result);
 
             if (result == null)
                 return false;
@@ -30,13 +32,13 @@ public override bool TryGetMember(GetMemberBinder binder, out object result)
 
         public override bool TrySetMember(SetMemberBinder binder, object value)
         {
-            Members[binder.Name] = value;
+            DynamicMembers[binder.Name] = value;
             return true;
         }
 
         public override IEnumerable<string> GetDynamicMemberNames()
         {
-            foreach (var entry in Members)
+            foreach (var entry in DynamicMembers)
             {
                 if (entry.Value != null)
                     yield return entry.Key;