Add CommandTarget for Button
<Page xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"> <StackPanel> <Button Command="Copy" Content="Copy" CommandTarget="{Binding ElementName=targetControl}" /> <Button Command="Paste" Content="Paste" CommandTarget="{Binding ElementName=targetControl}" /> <TextBox x:Name="targetControl" /> </StackPanel> </Page>