WPF uses RoutedCommand custom commands

The main code is as follows:

<summary>///declares and defines the command. </summary>routedcommand Clearcommand = new RoutedCommand ("Clear", typeof (MainWindow));///<summary>// /Initialize command.    Tri Youlai 2014-7-30 06:23:10///</summary>void Initializecommand () {//Set shortcut keys for the command. This.    CLEARCOMMAND.INPUTGESTURES.ADD (New KeyGesture (KEY.C, Modifierkeys.alt));    Assigns a command to the command source. This.Button1.Command = this.    Clearcommand;    Specifies the command target. This.Button1.CommandTarget = this.    Textboxa;    Creates a command association and places it on a perimeter control.    Commandbinding cb = new Commandbinding (); Cb.command = this.    Clearcommand; Cb.    CanExecute + = new Canexecuteroutedeventhandler (Cb_canexecute); Cb.    Executed + = new Executedroutedeventhandler (cb_executed); THIS.STACKPANEL1.COMMANDBINDINGS.ADD (CB);} <summary>///executes the method when the command is delivered to the target. Tri Youlai 2014-7-30 06:27:16///</summary>///<param name= "sender" ></param>///<param name= "E" >< /param>void cb_executed (object sender, Executedroutedeventargs e) {this.    Textboxa.clear (); e.handled = true;} <summary>///The method is called when the probe command is executable. Tri Youlai 2014-7-30 06:26:20///</summary>///<param name= "sender" ></param>///<param name= "E" >< /param>void Cb_canexecute (object sender, Canexecuteroutedeventargs e) {if (string. IsNullOrEmpty (this.    Textboxa.text) = = true) E.canexecute = false;    else E.canexecute = true; e.handled = true;}

WPF uses RoutedCommand custom commands