下面是ASPX页面代码:
<tr><td colspan="2">

<asp:DataGrid
          ID="dgrd"
          ForeColor="Black" GridLines="None"
          CellPadding="2" BackColor="LightGoldenrodYellow" BorderWidth="1px" BorderColor="Tan" 
           Height="432px" Width="680" runat="server">
  <Columns>
    <asp:BoundColumn DataField="sellproduct" HeaderText="产品名称">
            
            </asp:BoundColumn> 
     <asp:BoundColumn DataField="price" HeaderText="单价">
            
            </asp:BoundColumn> 
     <asp:BoundColumn DataField="quantity" HeaderText="数量">
           
            </asp:BoundColumn> 
     <asp:BoundColumn DataField="money" HeaderText="金额">
           
            </asp:BoundColumn> 
      </Columns>
   </asp:DataGrid></td>
</tr>
问题是:设计器中多出了三列(column0,column1,column2),为什么呢?我没写呀,怎么去掉?谢谢了!