How to send the clipboard my own content after clicking ctrl+C using C#?

Question

How can I replace the copied text on the clipboard with my own?

When I'm clicking CTRL + C , my clipboard still consists of marked text, but not with "Hello there".

if(Keyboard.IsKeyDown(Key.C) && Keyboard.IsKeyDown(Key.LeftCtrl))
{
     Clipboard.SetDataObject("Hello there");
}

PS, MessageBox works normally.

Answer 1

Try key event handler like this.

private void KeyDownEvent(object sender, KeyEventArgs e)
{
    if (e.Key == Key.C && Keyboard.Modifiers == ModifierKeys.Control)
    {
        Clipboard.SetDataObject("Hello there");
    }
}