The C1TaskDialog control includes several built-in buttons that can be included in the bottom right corner of the dialog box. To customize the dialog box with buttons, you can set the CommonButtons property to one or more of the following values:

Button	Name	Description
None	None	Displays no buttons.
	Ok	Displays the Ok button.
	Yes	Displays the Yes button.
	No	Displays the No button.
	Retry	Displays the Retry button.
	Cancel	Displays the Cancel button.
	Close	Displays the Close button.

To set the default button, you can use the SetDefaultButton method to indicate the name of the button. See the Setting the Default Button topic for details.