删除数据

   //删除
        public int DeleteProvice(string no)
        {
            using (var _DataEntities = new ntasystemEntities())
            {
                m_province model = _DataEntities.m_province.FirstOrDefault(p => p.No == no);
                model.made_dist = "D";
                return _DataEntities.SaveChanges();
            }
        }

 private void btndelete_Click(object sender, EventArgs e)
        {
            DialogResult result = MessageBox.Show("确定删除数据？", "提示", MessageBoxButtons.OKCancel, MessageBoxIcon.Information);
            if (result == DialogResult.OK)
            {
                if ( this.dgvProvinceInfo.Rows.Count > 0)
                {

                   
                    string no = dgvProvinceInfo.CurrentRow.Cells["ProvinceNo"].Value.ToString();//省份编号
                    if (wcf.DeleteProvice(no) > 0)
                    {
                        MessageBox.Show("删除成功！");
                        BindDateGridView();//重新绑定
                    }
                }
                else
                {
                    MessageBox.Show("没有数据可删除！");
                    return;
                }
            }
            else if (result == DialogResult.Cancel)
            {
                return;
            }
          
        }