我刚把我的网站上写了这个给你代码你看一下就明白了;
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;
using System.IO;
using DB;
using System.Data.SqlClient;
public partial class User_UpLoadFile : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{