// Delete a selected item for both the products and suppliers tab
 private void btnDelete_Click(object sender, EventArgs e)
 {
     if (tabModifyProductSupplier.SelectedTab == tabProduct) // Delete objects for the product tab
     {
         string       selectedProd = lstProductList.GetItemText(lstProductList.SelectedItem);
         var          deleteList   = string.Join("\n", ProductDB.GetDeleteList(selectedProd));
         DialogResult delProd      = MessageBox.Show("Are you sure you want to delete '" + selectedProd + "'?\n\n" +
                                                     "You will also be deleting the following links to this product:\n" + deleteList,
                                                     "Confirm Delete", MessageBoxButtons.OKCancel, MessageBoxIcon.Question);
         if (delProd == DialogResult.OK)                     // Delete if dialog result is OK
         {
             ProductDB.DeleteProductName(selectedProd);      // Delete the product
             this.frmModifyProductSupplier_Load(this, null); // Refresh the page
         }
     }
     else if (tabModifyProductSupplier.SelectedTab == tabSupplier) // Delete objects for the supplier tab
     {
         string       selectedSup = lstSupplierList.GetItemText(lstSupplierList.SelectedItem);
         var          deleteList  = string.Join("\n", SupplierDB.GetDeleteList(selectedSup));
         DialogResult delProd     = MessageBox.Show("Are you sure you want to delete '" + selectedSup + "'?\n\n" +
                                                    "You will also be deleting the following links to this supplier:\n" + deleteList,
                                                    "Confirm Delete", MessageBoxButtons.OKCancel, MessageBoxIcon.Question);
         if (delProd == DialogResult.OK)                     // Delete if dialog result is OK
         {
             SupplierDB.DeleteSupplierName(selectedSup);     // Delete the selected supplier
             this.frmModifyProductSupplier_Load(this, null); // Refresh the page
         }
     }
 }