private void mtOPDetails_Click(object sender, EventArgs e)
 {
     if (lvOP.SelectedItems.Count > 0)
     {
         frmOPDetails f = new frmOPDetails();
         f.OPNo = int.Parse(lvOP.SelectedItems[0].SubItems[0].Text);
         f.ShowDialog();
     }
 }
 private void mtOPDetails_Click(object sender, EventArgs e)
 {
     if (lvOP.SelectedItems.Count > 0)
     {
         frmOPDetails f = new frmOPDetails();
         f.OPNo = int.Parse(lvOP.SelectedItems[0].SubItems[0].Text);
         f.ShowDialog();
     }
 }