Imported Upstream version 4.6.0.125

Former-commit-id: a2155e9bd80020e49e72e86c44da02a8ac0e57a4

mcs/class/referencesource/System/compmod/system/componentmodel/AddingNewEventHandler.cs

@@ -0,0 +1,18 @@
+//------------------------------------------------------------------------------
+// <copyright file="AddingNewEventHandler.cs" company="Microsoft">
+//     Copyright (c) Microsoft Corporation.  All rights reserved.
+// </copyright>                                                                
+//------------------------------------------------------------------------------
+
+namespace System.ComponentModel {
+    using System;
+    using System.ComponentModel;
+    using System.Security.Permissions;
+
+    /// <devdoc>
+    ///     Represents the method that will handle the AddingNew event on a list,
+    ///     and provide the new object to be added to the list.
+    /// </devdoc>
+    [HostProtection(SharedState = true)]
+    public delegate void AddingNewEventHandler(object sender, AddingNewEventArgs e);
+}