C#中文件上传代码

 FileUpload FileUpload1 =(FileUpload)ListView1.InsertItem.FindControl("FileUpload1");
        string virtualPath = "~/GigPics/";
        string physicalPath = Server.MapPath(virtualPath);
        string fileName = DateTime.Now.ToString();
        string extention = System.IO.Path.GetExtension(FileUpload1.FileName);

        //存储文件到服务器
        FileUpload1.SaveAs(System.IO.Path.Combine(physicalPath, fileName + extention));
        //设置虚拟目录的路径
        myPicture.ImageUrl = virtualPath + fileName + extention;