WPF custom command commands

One, custom commands
The custom command must implement the ICommand interface, as shown in the following code:

<summary>///the Custom Purge command. Barefoot Thinking 2014-7-31 06:51:32///</summary>public class clearcommand:icommand{public    bool CanExecute (object Parameter)    {        throw new notimplementedexception ();    }    <summary>/////    the event should be fired when the command executable state has changed. ///    </summary> public    event EventHandler canexecutechanged;    The <summary>    ////command is executed to perform business-related clear logic. //</summary>//    <param name= "parameter" > the target object that executes the command. </param> public    void Execute (object parameter)    {        IView view = parameter as IView;        if (view! = null) view. Clear ();    }}

Second, implement the custom command source
Custom command sources need to be implementedICommandSourceInterface.

<summary>///the custom command source. Tri Youlai 2014-7-31 06:54:26///</summary>public class Mycommandsource:usercontrol, icommandsource{public    ICommand Command {get; set;}    Public object CommandParameter {get; set;}    Public System.Windows.IInputElement Commandtarget {get; set;}    protected override void Onmouseleftbuttondown (MouseButtonEventArgs e)    {        base. Onmouseleftbuttondown (e);        Executes the command on the command target.        if (this.commandtarget! = NULL && This.command! = null)            This.Command.Execute (this.commandtarget);}    }

iii. use of custom commands

Clearcommand clearcmd = new Clearcommand (); Mycommandsource1.command = Clearcmd;this. Mycommandsource1.commandtarget = this. MiniView1;

WPF custom command commands