简单投票代码示例：实现单选与多选功能

投票页面的page_load事件

if (!IsPostBack)
        {
            string ip = Request.ServerVariables["REMOTE_ADDR"];//获取IP地址
            Session["ip"] = ip;  将IP地址设置为全局变量
            Label1.Text = ip;
           

            string strsql = "select * from votemaster";        从votemaster表中查询所有内容并与Repeater1绑定
            DataTable dt = DbManager.ExecuteQuery(strsql);
            votemaster.DataSource = dt;
            Repeater1.DataBind();
        
              
           int a = Int32.Parse(Request.QueryString["id"].ToString()); 接受从地址栏传递过来的id的值
            Session ["id"]=a;
           string strtype = "select type from votemaster where id=" + a;   从votemaster表中查询id对应的type的值
           DataTable dttype = DbManager.ExecuteQuery(strtype);
           int itype = Int32.Parse(dttype.Rows[0][0].ToString ());
          
          
               string ss = "select votexiang from vote where orde=" + a;    从vote表中查询id对应得子项
               DataTable dt2 = DbManager.ExecuteQuery(ss);
               int b = dt2.Rows.Count;
               if (itype == 1)                            
               {
                   for (int c = 0; c < b; c++)                                  在单选按钮中添加子项
                   {
                       RadioButtonList1.Items.Add(dt2.Rows[c][0].ToString());