Imported Upstream version 4.0.0~alpha1

Former-commit-id: 806294f5ded97629b74c85c09952f2a74fe182d9

external/referencesource/System/compmod/system/componentmodel/IListSource.cs

@@ -0,0 +1,27 @@
+//------------------------------------------------------------------------------
+// <copyright file="IListSource.cs" company="Microsoft">
+//     Copyright (c) Microsoft Corporation.  All rights reserved.
+// </copyright>                                                                
+//------------------------------------------------------------------------------
+
+namespace System.ComponentModel {
+
+    using System;
+    using Microsoft.Win32;
+    using System.Collections;
+
+    /// <devdoc>
+    ///    <para>[To be supplied.]</para>
+    /// </devdoc>
+    [
+    TypeConverterAttribute("System.Windows.Forms.Design.DataSourceConverter, " + AssemblyRef.SystemDesign),
+    Editor("System.Windows.Forms.Design.DataSourceListEditor, " + AssemblyRef.SystemDesign, "System.Drawing.Design.UITypeEditor, " + AssemblyRef.SystemDrawing),
+    MergableProperty(false)
+    ]
+    public interface IListSource {
+
+        bool ContainsListCollection { get; }
+
+        IList GetList();
+    }
+}