private void btnDeletePro_Click(object sender, EventArgs e)
 {
     if(dgvProductInfo.SelectedRows.Count>0)
     {
         //提示
         if(DialogResult.OK == MessageBox.Show("真的要删除吗","删除",MessageBoxButtons.OKCancel,MessageBoxIcon.Question))
         {
             int id = Convert.ToInt32(dgvProductInfo.SelectedRows[0].Cells[0].Value.ToString());
             ProductInfoBLL bll = new ProductInfoBLL();
             if(bll.DeleteProductInfoByProId(id))
             {
                 MessageBox.Show("操作成功");
             }
             else
             {
                 MessageBox.Show("操作失败");
             }
             LoadProductInfoByDelFlag(0);
             
         }
     }
     else
     {
         MessageBox.Show("请选择要删除的行");
     }
 }