1 files changed, 41 insertions, 0 deletions
diff --git a/src/mscorlib/shared/System/NotSupportedException.cs b/src/mscorlib/shared/System/NotSupportedException.cs
new file mode 100644
index 0000000000..21b2d54a46
--- /dev/null
+++ b/src/mscorlib/shared/System/NotSupportedException.cs
@@ -0,0 +1,41 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+/*=============================================================================
+**
+**
+**
+** Purpose: For methods that should be implemented on subclasses.
+**
+**
+=============================================================================*/
+
+using System.Runtime.Serialization;
+
+namespace System
+{
+    [Serializable]
+    public class NotSupportedException : SystemException
+    {
+        public NotSupportedException()
+            : base(SR.Arg_NotSupportedException)
+        {
+            HResult = __HResults.COR_E_NOTSUPPORTED;
+        }
+
+        public NotSupportedException(String message)
+            : base(message)
+        {
+            HResult = __HResults.COR_E_NOTSUPPORTED;
+        }
+
+        public NotSupportedException(String message, Exception innerException)
+            : base(message, innerException)
+        {
+            HResult = __HResults.COR_E_NOTSUPPORTED;
+        }
+
+        protected NotSupportedException(SerializationInfo info, StreamingContext context) : base(info, context) { }
+    }
+}