Command event for WPF MVVM MenuItem

This is an auxiliary class of events that can be used to implement the MenuItem command event

 Public classmycommands:freezable, ICommand, ICommandSource { Publicmycommands () {} Public Static ReadOnlyDependencyProperty Commandparameterproperty =Dependencyproperty.register ("CommandParameter",              typeof(Object),              typeof(mycommands),NewPropertyMetadata ((Object)NULL));  Public ObjectCommandParameter {Get            {                return(Object) GetValue (Commandparameterproperty); }            Set{SetValue (commandparameterproperty, value); }        }         Public Static ReadOnlyDependencyProperty Commandtargetproperty =Dependencyproperty.register ("Commandtarget",               typeof(IInputElement),typeof(mycommands),NewPropertyMetadata ((IInputElement)NULL));  Publiciinputelement Commandtarget {Get            {                return(IInputElement) GetValue (Commandtargetproperty); }            Set{SetValue (commandtargetproperty, value); }        }         Public Static ReadOnlyDependencyProperty Commandproperty = Dependencyproperty.register ("Command",typeof(ICommand),typeof(Mycommands),NewPropertyMetadata (NewPropertychangedcallback (oncommandchanged));  PublicICommand Command {Get{return(ICommand) GetValue (commandproperty);} Set{SetValue (commandproperty, value);} }        #regionICommand Members Public BOOLCanExecute (Objectparameter) {            if(Command! =NULL)                returnCommand.canexecute (CommandParameter); return false; }         Public voidExecute (Objectparameter)        {Command.Execute (CommandParameter); }         Public EventEventHandler canexecutechanged; Private Static voidoncommandchanged (DependencyObject D, DependencyPropertyChangedEventArgs e) {mycommands Commandrefe Rence= d asMycommands; ICommand Oldcommand= E.oldvalue asICommand; ICommand Newcommand= E.newvalue asICommand; if(Oldcommand! =NULL) {oldcommand.canexecutechanged-=commandreference.canexecutechanged; }            if(Newcommand! =NULL) {newcommand.canexecutechanged+=commandreference.canexecutechanged; }        }        #endregion        #regionFreezableprotected OverrideFreezable Createinstancecore () {Throw Newnotimplementedexception (); }        #endregion    }

Methods that are called in XAML

<UserControl.Resources> <unititys:mycommands x:key="AAA"Command="{Binding PATH=AAA}"/></usercontrol.resources> <contextmenu x:key="RouterMenu1"datacontext="{Binding Relativesource={relativesource mode=self}, Path=placementtarget.datacontext}"> <menuitem header="Call AAA"Command="{StaticResource AAA}"></MenuItem> </ContextMenu>

In ViewModel and normal command-like calls.

Command event for WPF MVVM MenuItem