private void LT_Click(object sender, RoutedEventArgs e) { int i; drawLT mylt = new drawLT(); if (running_train != 0) { mylt.Init_DrawLT(running_train); for (i = 0; i < running_train; i++) { mylt.set_lt(train[i].arrive_time - train[i].standard_time); mylt.DrawLT(); } imgPic.Source = mylt.Finish_DrawTS(); } }