How to detect Help button press in Windows Forms MessageBox?

Question

I have a message box with 3 buttons: Yes, No, Help:

var result = MessageBox.Show(\"text\", \"title\",
                MessageBoxButtons.YesNo,
                       


        

Answer 1

You want to handle the Form's HelpRequested event. See the example in the help topic.

public static DialogResult Show(
    string text,
    string caption,
    MessageBoxButtons buttons,
    MessageBoxIcon icon,
    MessageBoxDefaultButton defaultButton,
    MessageBoxOptions options,
    bool displayHelpButton
)