一个网站的投票系统，取主键问题??
//做的是一个网站的投票，取主键问题,下面是代码：<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>网站投票</title>
</head>
<body>
<form id="form1" runat="server">
<div style="text-align: center">
<table border="0" cellpadding="0" cellspacing="0" id="TABLE1" style="width: 265px">
<tr>
<td align="center" valign="bottom">
<asp:GridView ID="GridView1" runat="server" CellPadding="4" ForeColor="#333333" GridLines="None" AutoGenerateColumns="False" Width="100%" DataKeyNames="voteid" Height="100%" >
<FooterStyle BackColor="#507CD1" Font-Bold="True" ForeColor="White" />
<Columns>
<asp:TemplateField HeaderText="投票项目">
<EditItemTemplate>
<asp:TextBox ID="TextBox2" runat="server"></asp:TextBox>
</EditItemTemplate>
<ItemTemplate>
<%#DataBinder.Eval (Container .DataItem ,"item") %>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField>
<EditItemTemplate>
<asp:TextBox ID="TextBox2" runat="server" Visible ="true" ></asp:TextBox>
</EditItemTemplate>
<ItemTemplate>
<asp:CheckBox ID="votecheck" runat="server" />
</ItemTemplate>
</asp:TemplateField>
</Columns>
<RowStyle BackColor="#EFF3FB" />
<EditRowStyle BackColor="#2461BF" />
<SelectedRowStyle BackColor="#D1DDF1" Font-Bold="True" ForeColor="#333333" />
<PagerStyle BackColor="#2461BF" ForeColor="White" HorizontalAlign="Center" />
<HeaderStyle BackColor="#507CD1" Font-Bold="True" ForeColor="White" />
<AlternatingRowStyle BackColor="White" />
</asp:GridView>
</td>
</tr>
<tr>
<td align="center" valign="bottom">
<asp:Button ID="voteButton" runat="server" Text="我要投票" OnClick ="voteButton_Click" />
<asp:Button ID="lookvoteButton" runat="server" Text="查看投票" /></td>
</tr>
<tr>
<td style="text-align: center;">
<asp:Label ID="Label1" runat="server">success</asp:Label></td>
</tr>
</table>
</div>
</form>
</body>
</html>
-------------后台代码-----
using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Data.SqlClient;
public partial class _Default : System.Web.UI.Page
{
private void bindvotedata()
{
votedb vote = new votedb();
SqlDataReader sdr = vote.getvote();
GridView1.DataSource = sdr;
GridView1.DataBind();
sdr.Close();
}
protected void Page_Load(object sender, EventArgs e)
{
bindvotedata();
Label1.Visible = false;
}
protected void voteButton_Click(object sender, EventArgs e)
{
votedb vote = new votedb();
foreach (GridViewRow item in GridView1.Rows)
{
CheckBox check = (CheckBox)item.FindControl("votecheck");
if (check != null)
{
if (check.Checked == true)
{
// -------------------------------------------------------------下面取主键取不出来！不知道怎么办？？ vote.upvote(Int32.Parse(GridView1.DataKeys[item.RowIndex].ToString()));
Label1.Visible = true;
}
}
}
}
}
--------------------编程问答-------------------- up --------------------编程问答-------------------- up
补充：.NET技术 , ASP.NET
