关于模块代码

try { if (FileUpload1.PostedFile.FileName == "") { this.lb_info.Text = "请选择文件！"; } else { string filepath = FileUpload1.PostedFile.FileName; string filename = filepath.Substring(filepath.LastIndexOf("\\") + 1); string serverpath = Server.MapPath("images/") + filename; //string serverpath = @"d:/" + filename; FileUpload1.PostedFile.SaveAs(serverpath); this.lb_info.Text = "上传成功！";