上传多文件

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.IO;

namespace WA1
{
    public partial class WebForm1 : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {

        }

        protected void Button1_Click(object sender, EventArgs e)
        {
            HttpFileCollection uploadFiles = Request.Files;
            for (int i = 0; i < uploadFiles.Count; i++)
            {
                HttpPostedFile postedFile = uploadFiles[i];
                try
                {
                    string filenames = postedFile.FileName;//获取文件名称

                    string suffix = Path.GetExtension(filenames).ToLower();//获取文件后缀
                    if (suffix == ".gif" || suffix == ".jpg" || suffix == ".bmp" || suffix == ".png")
                    {
                        int filelength = (FUload.PostedFile.ContentLength) / 1024;
                        if (filelength < 2048)
                        {
                            //保存图片的网络服务目录
                            string ok = Server.MapPath("MyFile\\" + postedFile.FileName);
                            //保存图片
                            postedFile.SaveAs(ok);
                            

                            

                        }
                        else
                        {
                            Response.Write("上传图片太大，请上传小于2M的图片");
                            return;
                        }
                    }
                }
                catch (Exception ex)
                {
                    Response.Write("fdad" + ex.Message);
                }
              
            }
            Response.Write("上传成功");

        }
    }
}