Create a Custom Command in WPF

1.

public static RoutedCommand SwitchCommand = new RoutedCommand();

private bool isOn = false;//track the light

//Build the project will allow us to add a reference to the command in xaml

2.

xmlns:local=”clr-namespace:xxxxx”

….

3.

<MenuItem Header=”xxx” Command=”local:Window1.SwitchCommand”/>

4.

create custom CommandBindings for the command

<Window.CommandBindings>

<CommandBinding Command=”local:Window1.SwitchCommand” CanExecute=”CommandBinding_CanExecute” Executed=”CommandBinding_Executed”

</Window.CommandBindings>

5.

<Window.InputBinding>

<KeyBinding Key=”s” Command=”local:xxx” Modifiers=”Ctrl”>

</Window.InputBinding>

6.

realize the same function in code as in XAML:

<Window ….Loaded=”Window_Loaded”/>

private void Window_Loaded(object sender, RoutedEventArgs e)

{

CommandBinding cmdB = new CommandBinding(SwitchCommand, CommandBinding_Executed, CommandBinding_CanExecute);

this.CommandBindings.Add(cmdB);

btnSwitch.Command=SwitchCommand;

 

KeyGesture keyG = new KeyGesture(Key.S, ModifierKeys.Control);

InputBind inputB = new InputBinding(SwitchCommand, keyG);

this.InputBindings.Add(inputB);

}