这是前台代码:
 <asp:datagrid id="DataGrid1" runat="server" Width="544px" ShowHeader="False" AllowPaging="False"
       AutoGenerateColumns="False">
       <Columns>
        <asp:TemplateColumn>
         <ItemTemplate>
           <input type="checkbox" value='<%# DataBinder.Eval(Container.DataItem, "qjid")%>' runat=server>
         </ItemTemplate>
        </asp:TemplateColumn>
        <asp:BoundColumn DataField="qjname"></asp:BoundColumn>
        <asp:TemplateColumn>
         <ItemTemplate>
          &nbsp;数量:
          <asp:textbox id="shuliang" runat="server" Width="50"></asp:textbox>
         </ItemTemplate>
        </asp:TemplateColumn>
       </Columns>
      </asp:datagrid>
后台程序,
for( s = 0 ; s < DataGrid1.Items.Count - 1; s++)
{
if(DataGrid1.Items[s].Selected == true)
{
string sql;
string sql1;
string qjshuliang = shuliang.Text;
sql1 = "insert ylldb (ldname,ylliaohao,ldshuliang) values ( '"+ strldname +"','"+strylliaohao+"','"+ strldshuliang +"')";
OleDbCommand cmd = new OleDbCommand(sql1,conn);
cmd.ExecuteNonQuery(); sql = "insert ylqjb (ylliaohao,qjliaohao,qjshuliang) values('"+ strylliaohao +"', '"+ DataGrid1.Items[s].Text +"','"+ qjshuliang +"')";
OleDbCommand cmd1 = new OleDbCommand(sql,conn);
cmd.ExecuteNonQuery(); } }我怎么选中前台的checkbox啊
各位高手请帮个忙