.NET图片上传

/// <summary>

    /// 这是图件的上传

    /// </summary>

    /// 创建时间：2012/06/27

    public string tujian()

    {

        string path = "";

        if (FileUpload1.HasFile)

        {

            if (FileUpload1.PostedFile.ContentLength > 1000 * 1000)

            {

                Response.Write("过大");

            }

            else

            {

              if (FileUpload1.PostedFile.FileName.Substring(FileUpload1.PostedFile.FileName.LastIndexOf(".")).ToLower() != ".jpg")

                {

                    ClientScript.RegisterStartupScript(this.GetType(), "a1", "<script>alert('格式不正确')</script>");

                }

                else

                {

                    string strFileNewName = DateTime.Now.ToString("yyyyMMddhhmmss") ;

                    // FileUpload1.SaveAs(@"E:\"+FileUpload1.FileName);

                    FileUpload1.SaveAs(Server.MapPath("FileExcel") + "\\" + strFileNewName+FileUpload1.FileName);

                    //获取刚刚上传文件路径

                    path =  strFileNewName + FileUpload1.FileName ;

                    //ClientScript.RegisterStartupScript(GetType(), "xxx", "<script>alert('上传成功');</script>");

                    string s = string.Format("<script>alert('{0}')</script>", "上传成功！");

                    ClientScript.RegisterStartupScript(this.GetType(), "xxx", s);

                 }

           }

        }

        return path;

     }