Question

How can I determine when the control key is held down during button click in a C# Windows program? I want one action to take place for Ctrl/Click and a different one for Click.

Answer 1

And a little bit more:

private void button1_Click ( object sender, EventArgs e ) {                if( (ModifierKeys  & Keys.Control) == Keys.Control )     {         ControlClickMethod();         }     else     {         ClickMethod();     } }  private void ControlClickMethod() {     MessageBox.Show( 'Control is pressed' ); }  private void ClickMethod() {     MessageBox.Show ( 'Control is not pressed' ); }