protected void btnSend_Click(object sender, EventArgs e)

    {

        try

        {

            //上传文件的思路：

            //获取上传文件的名称，此时为一个全路径的地址

            string upFileName = fulFileName.FileName;

            //获取上传文件的扩展名

            string lastName = upFileName.Substring(upFileName.LastIndexOf("."));

            //得到新的文件名称

            string newFileName = txtFileName.Text + lastName;

            //设置要保存到的文件路径

            string FilePath =Server.MapPath("./")+"File"+"//"+newFileName;

            //将文件保存到指定文件路径下

            fulFileName.PostedFile.SaveAs(FilePath);

            lblResult.Text = "上传成功";

        }

        catch (Exception ex)

        {

            Response.Write(ex.Message.ToString());

            lblResult.Text = "上传失败";

        }

     

}