Question

未将对象引用设置到对象的实例.string voteTitle = Request.QueryString["voteTi

using System;
using System.Data;
using System.Configuration;
using System.Collections;
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 addItems : System.Web.UI.Page
{
DB db = new DB();
protected void Page_Load(object sender, EventArgs e)
{
string voteTitle = Request.QueryString["voteTitle"].ToString().Trim();
this.labTitle.Text = voteTitle.ToString();
//取出相应题目的ID
string strid = "select id from voteMaster where voteTitle='" + voteTitle + "'";
int ID=Convert.ToInt32(db.executeGetReturn(strid));

}
protected void Button1_Click(object sender, EventArgs e)
{　//添加选项
string voteTitle = Request.QueryString["voteTitle"].ToString().Trim();
string strid = "select id from voteMaster where voteTitle='" + voteTitle + "'";
int ID = Convert.ToInt32(db.executeGetReturn(strid));
string strsql = "insert into voetDetails(voteItem,id) values('" + this.TextBox1.Text.ToString() + "'," + ID + ")";
db.NonQueryexecute(strsql);
Response.Write("<script> alert('添加成功，请继续添加！')　</script>");
this.TextBox1.Text = "";

}

protected void Button2_Click(object sender, EventArgs e)
{　//完成选项添加，跳转到主页面
Response.Redirect("index.aspx");
}
}

Answer 1

voteTitle 这个传递过来应该有一个session语句吧

追问

怎么解决这个问题呢

追答

把你这个值传过来啊