Imported Upstream version 4.0.0~alpha1

Former-commit-id: 806294f5ded97629b74c85c09952f2a74fe182d9

external/referencesource/System.Web/UI/WebParts/WebPartDisplayModeEventArgs.cs

@@ -0,0 +1,27 @@
+//------------------------------------------------------------------------------
+// <copyright file="WebPartDisplayModeEventArgs.cs" company="Microsoft">
+//     Copyright (c) Microsoft Corporation.  All rights reserved.
+// </copyright>
+//------------------------------------------------------------------------------
+
+namespace System.Web.UI.WebControls.WebParts {
+
+    using System;
+
+    public class WebPartDisplayModeEventArgs : EventArgs {
+        private WebPartDisplayMode _oldDisplayMode;
+
+        public WebPartDisplayModeEventArgs(WebPartDisplayMode oldDisplayMode) {
+            _oldDisplayMode = oldDisplayMode;
+        }
+
+        public WebPartDisplayMode OldDisplayMode {
+            get {
+                return _oldDisplayMode;
+            }
+            set {
+                _oldDisplayMode = value;
+            }
+        }
+    }
+}