int value = Convert.ToInt32(menuInfo.SelectedItem.Value);
            MonitorService ms = new MonitorService ();
            for (int i = 0; i < 15; i++)
            {
                if (value == i)
                {
                    string item = menuInfo.SelectedItem.Text;
                    string id = gvItem.DataKeys[e.RowIndex].Value.ToString();
                    gvItem.DataSource = ms.getUser(item);
                    gvItem.DataBind();
                    playerInfo pI = new playerInfo ();
                 
                    if (pI.Item1 == item)
                    {
                        ms.delItem1(id, item);
                    }
                    else if (pI.Item2 == item)
                    {
                        ms.delItem2(id, item);
                    }
                    else if (pI.Item3 == item)
                    {
                        ms.delItem3(id, item);
                    }
                }
            }
        }

pI是实体类的名字 我现在断点下来pI.Item1为null，我就是想通过pI.Item1获取到数据库中的值和item比较 怎么实现