1 files changed, 14 insertions, 0 deletions
diff --git a/src/mscorlib/shared/System/EventHandler.cs b/src/mscorlib/shared/System/EventHandler.cs
new file mode 100644
index 0000000000..e6923cf637
--- /dev/null
+++ b/src/mscorlib/shared/System/EventHandler.cs
@@ -0,0 +1,14 @@
+// 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.
+
+using System;
+
+namespace System
+{
+    [Serializable]
+    public delegate void EventHandler(Object sender, EventArgs e);
+
+    [Serializable]
+    public delegate void EventHandler<TEventArgs>(Object sender, TEventArgs e); // Removed TEventArgs constraint post-.NET 4
+}