出现“用户代码未处理”，求帮助

代码如下：

        private void hiredRoomInfoDataGridView_CellFormatting(object sender, DataGridViewCellFormattingEventArgs e)

        {

            

            if (hiredRoomInfoDataGridView.Columns[e.ColumnIndex].Name.Equals("ReceiveStatus"))

            {

                if (int.Parse(e.Value.ToString()) == 1)

                e.Value = "已收租";

                else

                e.Value = "未收租";

            }

        }

------解决方案--------------------
if(e!=null&&e.Value!=null)
e.Value=Convert.ToInt32(e.Value)==1?"已收租":"未收租";