1、建立FileUpLoad.aspx文件和文件夹upLoad

2、FileUpLoad.aspx代码如下：

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="FileUpLoad.aspx.cs" Inherits="FileUpLoad" %>












onClick="Button1_Click" Text="上传" />

3、FileUpLoad.aspx.cs代码如下：

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.IO;

public partial class FileUpLoad : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{

}
protected void Button1_Click(object sender, EventArgs e)
{
if (FileUpload1.HasFile)
{
FileUpload1.SaveAs (Server.MapPath ( "~/Upload/" +FileUpload1.FileName));
Label1.Text="恭喜你，上传成功!";
}
else
{
Label1.Text = "上传失败，或没指定正确的文件!";
}
}
}

4：运行效果如下：