//Verify Product ID (warn For any replication)
 private void txtb_ProductID_Validated(object sender, EventArgs e)
 {
     //For Control (Allowed/Banned) ProductID Replication Validate
     //False = Replication Banned In case Of Adding/True = Replication Allowed in case of Editing
     if (IDReplicationState == false)
     {
         DataTable Dt = new DataTable();
         Dt = Pro.VerifyProductID(txtb_ProductID.Text);
         if (Dt.Rows.Count > 0)
         {
             MessageBox.Show("This ID Product is already in use", "Warning", MessageBoxButtons.OK, MessageBoxIcon.Warning);
             txtb_ProductID.Focus();
             txtb_ProductID.SelectionStart  = 0;
             txtb_ProductID.SelectionLength = txtb_ProductID.TextLength;
         }
     }
 }