Imported Upstream version 4.6.0.125

Former-commit-id: a2155e9bd80020e49e72e86c44da02a8ac0e57a4

mcs/class/referencesource/System/sys/system/windows/input/ICommand.cs

@@ -0,0 +1,45 @@
+//---------------------------------------------------------------------------
+//
+// Copyright (C) Microsoft Corporation.  All rights reserved.
+//
+//---------------------------------------------------------------------------
+
+using System;
+using System.ComponentModel;
+using System.Runtime.CompilerServices;
+using System.Windows.Markup;
+
+namespace System.Windows.Input
+{
+    class BuildInfo{
+        public const string WCP_VERSION="4.0.0.0";
+        public const string WCP_PUBLIC_KEY_TOKEN="31bf3856ad364e35";
+
+    }
+    ///<summary>
+    ///     An interface that allows an application author to define a method to be invoked.
+    ///</summary>
+    [TypeForwardedFrom("PresentationCore, Version=" + BuildInfo.WCP_VERSION + ", Culture=neutral, PublicKeyToken=" + BuildInfo.WCP_PUBLIC_KEY_TOKEN)]
+    [TypeConverter("System.Windows.Input.CommandConverter, PresentationFramework, Version=" + BuildInfo.WCP_VERSION + ", Culture=neutral, PublicKeyToken=" + BuildInfo.WCP_PUBLIC_KEY_TOKEN + ", Custom=null")]
+    [ValueSerializer("System.Windows.Input.CommandValueSerializer, PresentationFramework, Version=" + BuildInfo.WCP_VERSION + ", Culture=neutral, PublicKeyToken=" + BuildInfo.WCP_PUBLIC_KEY_TOKEN + ", Custom=null")]
+    public interface ICommand
+    {
+        /// <summary>
+        ///     Raised when the ability of the command to execute has changed.
+        /// </summary>
+        event EventHandler CanExecuteChanged;
+
+        /// <summary>
+        ///     Returns whether the command can be executed.
+        /// </summary>
+        /// <param name="parameter">A parameter that may be used in executing the command. This parameter may be ignored by some implementations.</param>
+        /// <returns>true if the command can be executed with the given parameter and current state. false otherwise.</returns>
+        bool CanExecute(object parameter);
+
+        /// <summary>
+        ///     Defines the method that should be executed when the command is executed.
+        /// </summary>
+        /// <param name="parameter">A parameter that may be used in executing the command. This parameter may be ignored by some implementations.</param>
+        void Execute(object parameter);
+    }
+}