Code snippet for messagebox with YesNoCancel buttons in C#:
System.Windows.Forms.DialogResult dr = MessageBox.Show("Record has been changed.Do you want to save it?", "", MessageBoxButtons.YesNoCancel, MessageBoxIcon.Question);
if (dr == DialogResult.Yes)
{
// Code
}
else if (dr == DialogResult.No)
{
// Code
}
else
{
// Code
}