private void DeleteProduct_Click(object sender, EventArgs e)
 {
     //try
     //{
     info.product_id = Convert.ToInt32(ProductIDtextBox.Text);
     dt = opr.DeleteProduct(info);
     refreshing(dataGridView1);
     //}
     //catch {
     //    MetroFramework.MetroMessageBox.Show(this, "Owner must need to delete the log first.", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
     //}
 }