if (lblTime.Text == MyString) //format to "hh:mm tt"
{
MessageBox.Show("hoy AM");
return 0;
}

above code problem is that showing multiple messagebox, i tried already this program in VB6 message box shows only once, but in C#.net i didn't yet press the OK button but continuously appear,
i want only to appear the message box once when my time is equal the system time

tnx.