datalist下的radiobuttonlist

[sdsyzzz]

我现在在做一个在线调查页面，在datalist控件里面嵌套了一个radiobuttonlist控件，现在要实现具体为：比如有三道题，每道题有四个选项ABCD，三道题我分别选择ABC时数据库中的值增加1
数据库如下：

cntA cntB cntC cntD分别代表选该选项的次数
我自己写了个代码，但是总是显示回调参数无效，不知道怎么解决
页面代码如下：

<asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolder1" Runat="Server">
    <div id="sitemap">
        <asp:SiteMapPath ID="SiteMapPath1" runat="server" Font-Names="Verdana" 
            Font-Size="0.8em" PathSeparator=">" >
            <PathSeparatorStyle Font-Bold="True" ForeColor="#990000" />
            <CurrentNodeStyle ForeColor="#333333" />
            <NodeStyle Font-Bold="True" ForeColor="#990000" />
            <RootNodeStyle Font-Bold="True" ForeColor="#FF8000" />
        </asp:SiteMapPath>
        <asp:SiteMapDataSource ID="SiteMapDataSource1" runat="server" />
</div>
    <div id="txt">
    
        <asp:DataList ID="DataList1" runat="server">
            <FooterTemplate>
                <table style="width:100%;">
                    <tr>
                        <td class="style1">
                            <asp:Button ID="Button1" runat="server" Text="提交" onclick="Button1_Click" />
                        </td>
                        <td>
                            <asp:Button ID="Button2" runat="server" Text="查看" onclick="Button2_Click" />
                        </td>
                    </tr>
                </table>
            </FooterTemplate>
            <ItemTemplate>
                <table style="width:100%;">
                    <tr>
                        <td>
                            <%# Eval("Title") %></td>
                    </tr>
                </table>
                <table style="width:100%;">
                    <tr>
                        <td class="style1" rowspan="4">
                            <asp:RadioButtonList ID="RadioButtonList1" runat="server" Width="35px">
                                <asp:ListItem>A</asp:ListItem>
                                <asp:ListItem>B</asp:ListItem>
                                <asp:ListItem>C</asp:ListItem>
                                <asp:ListItem>D</asp:ListItem>
                            </asp:RadioButtonList>
                        </td>
                        <td>
                           <%# Eval("A") %></td>
                    </tr>
                    <tr>
                        <td>
                            <%# Eval("B") %></td>
                    </tr>
                    <tr>
                        <td>
                            <%# Eval("C") %></td>
                    </tr>
                    <tr>
                        <td>
                           <%# Eval("D") %></td>
                    </tr>
                </table>
            </ItemTemplate>
        </asp:DataList>
   
        </div>
</asp:Content>

代码如下：

using System;
using System.Collections;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;
using System.Data.OleDb;

public partial class Default3 : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
       
            OleDbConnection conn = new OleDbConnection();
            conn.ConnectionString = "Provider=Microsoft.Jet.OLEDB.4.0;Data source=" + Server.MapPath("App_Data/hqpx.mdb");
            conn.Open();
            OleDbDataAdapter oa1 = new OleDbDataAdapter("select Title,A,B,C,D from Survey", conn);
            DataTable dt1 = new DataTable();
            oa1.Fill(dt1);
            DataList1.DataSource = dt1;
            DataList1.DataBind();
            conn.Close();
       
    }




    protected void Button1_Click(object sender, EventArgs e)
    {
        
            OleDbConnection conn = new OleDbConnection();
            conn.ConnectionString = "Provider=Microsoft.Jet.OLEDB.4.0;Data source=" + Server.MapPath("App_Data/hqpx.mdb");
            conn.Open();
            RadioButtonList list = new RadioButtonList();
            list.Items[0].Value = "A";
            list.Items[1].Value = "B";
            list.Items[2].Value = "C";
            list.Items[3].Value = "D";

            for (int i = 0; i < DataList1.Items.Count; i++)
            {

                OleDbCommand cmd1 = new OleDbCommand("select A,B,C,D from Count where id=" + (i + 1) + "", conn);
                OleDbDataReader read = cmd1.ExecuteReader();


                if (list.SelectedValue == "A")
                {
                    int cnt = read.GetInt32(3);
                    OleDbCommand cmdA = new OleDbCommand("update Count set A=" + (cnt + 1) + "", conn);
                    cmdA.ExecuteNonQuery();

                }
                else if (list.SelectedValue == "B")
                {
                    int cnt = read.GetInt32(4);
                    OleDbCommand cmdB = new OleDbCommand("update Count set B=" + (cnt + 1) + "", conn);
                    cmdB.ExecuteNonQuery();
                }
                else if (list.SelectedValue == "C")
                {
                    int cnt = read.GetInt32(5);
                    OleDbCommand cmdC = new OleDbCommand("update Count set C=" + (cnt + 1) + "", conn);
                    cmdC.ExecuteNonQuery();
                }
                else if (list.SelectedValue == "D")
                {
                    int cnt = read.GetInt32(6);
                    OleDbCommand cmdD = new OleDbCommand("update Count set D=" + (cnt + 1) + "", conn);
                    cmdD.ExecuteNonQuery();
                }
            }


        }

    protected void Button2_Click(object sender, EventArgs e)
    {

    }
}

[xingshungames]

RadioButtonList list = new RadioButtonList();
            list.Items[0].Value = "A";
            list.Items[1].Value = "B";
            list.Items[2].Value = "C";
            list.Items[3].Value = "D";

这个和

<asp:RadioButtonList ID="RadioButtonList1" runat="server" Width="35px">
                                <asp:ListItem>A</asp:ListItem>
                                <asp:ListItem>B</asp:ListItem>
                                <asp:ListItem>C</asp:ListItem>
                                <asp:ListItem>D</asp:ListItem>
                            </asp:RadioButtonList>

就不是一个下拉框吧？怎么能根据list的value操纵数据库呢？

还有就是数目加1的话，直接update Count set A=A+1就ok了吧？还用这么麻烦？看着都晕啊