1 files changed, 30 insertions, 0 deletions
diff --git a/src/mscorlib/shared/System/IAsyncResult.cs b/src/mscorlib/shared/System/IAsyncResult.cs
new file mode 100644
index 0000000000..0abeaca525
--- /dev/null
+++ b/src/mscorlib/shared/System/IAsyncResult.cs
@@ -0,0 +1,30 @@
+// 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.
+
+/*============================================================
+**
+** Interface: IAsyncResult
+**
+** Purpose: Interface to encapsulate the results of an async
+**          operation
+**
+===========================================================*/
+
+using System;
+using System.Threading;
+
+namespace System
+{
+    public interface IAsyncResult
+    {
+        bool IsCompleted { get; }
+
+        WaitHandle AsyncWaitHandle { get; }
+
+
+        Object AsyncState { get; }
+
+        bool CompletedSynchronously { get; }
+    }
+}