-Fixed serializing IListSource implementations

Src/Newtonsoft.Json.Tests/Serialization/JsonSerializerTest.cs

@@ -96,6 +96,42 @@ namespace Newtonsoft.Json.Tests.Serialization
     [TestFixture]
     public class JsonSerializerTest : TestFixtureBase
     {
+        public class ListSourceTest : IListSource
+        {
+            private string str;
+
+            public string strprop
+            {
+                get { return str; }
+                set { str = value; }
+            }
+
+            [JsonIgnore]
+            public bool ContainsListCollection
+            {
+                get { return false; }
+            }
+
+            public IList GetList()
+            {
+                return new List<string>();
+            }
+        }
+
+        [Test]
+        public void ListSourceSerialize()
+        {
+            ListSourceTest c = new ListSourceTest();
+            c.strprop = "test";
+            string json = JsonConvert.SerializeObject(c);
+
+            Assert.AreEqual(@"{""strprop"":""test""}", json);
+
+            ListSourceTest c2 = JsonConvert.DeserializeObject<ListSourceTest>(json);
+
+            Assert.AreEqual("test", c2.strprop);
+        }
+
         public struct ImmutableStruct
         {
             public ImmutableStruct(string value)

Src/Newtonsoft.Json/Serialization/JsonTypeReflector.cs

@@ -79,8 +79,9 @@ namespace Newtonsoft.Json.Serialization
             {
                 Type converterType = typeConverter.GetType();
 
-                if (converterType.FullName != "System.ComponentModel.ComponentConverter"
-                    && converterType.FullName != "System.ComponentModel.ReferenceConverter"
+                if (!string.Equals(converterType.FullName, "System.ComponentModel.ComponentConverter", StringComparison.Ordinal)
+                    && !string.Equals(converterType.FullName, "System.ComponentModel.ReferenceConverter", StringComparison.Ordinal)
+                    && !string.Equals(converterType.FullName, "System.Windows.Forms.Design.DataSourceConverter", StringComparison.Ordinal)
                     && converterType != typeof(TypeConverter))
                 {
                     return typeConverter.CanConvertTo(typeof(string));