protected void Page_Load(object sender, EventArgs e)

    {

        if (IsPostBack)

        {

            Boolean fileOK = false;

            String path = Server.MapPath("192.168.0.222/root/");

            if (file1.HasFile)

            {

                String fileExtension =

                    System.IO.Path.GetExtension(file1.FileName).ToLower();

                String[] allowedExtensions = { ".gif", ".png", ".jpeg", ".jpg" };

                for (int i = 0; i < allowedExtensions.Length; i++)

                {

                    if (fileExtension == allowedExtensions[i])

                    {

                        fileOK = true;

                    }

                }

            }



            if (fileOK)

            {

                try

                {

                    file1.PostedFile.SaveAs(path

                        + file1.FileName);

                    lbcg.Text = "File uploaded!";

                }

                catch (Exception ex)

                {

                    lbcg.Text = "文件无法上传.";

                }

            }

          &