Class encapsulates a dialog result.
// create an alert message with Yes and No buttons
alert("Are you sure you would like to continue?", "Title", DialogResult.YesNo);
// create an alert message with OK and Cancel buttons
alert("Message", "Title", DialogResult.Ok | DialogResult.Cancel);
// create an alert message and only execute the code if the Yes button is pressed
if (alert("Are you sure you would like to continue?", "Title", DialogResult.YesNo) == DialogResult.Yes)
{
// code to execute if the Yes button is pressed
alert("Yes was clicked!");
}