问题
I want to suppress Cut, Copy and Paste operations in Text Box.
I don't want user to do any of these operations through keyboard or from default context menu in the text box .
Please let me know how can I restrict these operations?
回答1:
You can do this pretty easily using the CommandManager.PreviewCanExecute routed event. In your XAML, you would put the following on your TextBox element. This will apply to CTL+V, etc as well as the context menu or any buttons that you may have mapped to those commands so it's very effective.
<TextBox CommandManager.PreviewCanExecute="HandleCanExecute" />
Then in your code-behind, add a HandleCanExecute method that disables the commands.
private void HandleCanExecute(object sender, CanExecuteRoutedEventArgs e) {
if ( e.Command == ApplicationCommands.Cut ||
e.Command == ApplicationCommands.Copy ||
e.Command == ApplicationCommands.Paste ) {
e.CanExecute = false;
e.Handled = true;
}
}
来源：https://stackoverflow.com/questions/3051144/how-to-suppress-cut-copy-and-paste-operations-in-textbox-in-wpf