上传图片过程中给父窗口赋值

string url = Server.MapPath("..\\upImg") + "\\" + System.DateTime.Now.ToString("yyMMddHHmmss") + Path.GetExtension(FileUpload1.FileName);            
                FileUpload1.SaveAs(url);
                Label1.Text = FileUpload1.PostedFile.FileName;
                Label2.Text = url;
                Response.Write("<scrīpt>opener.document.getElementById('tbPicture').value='"+Path.GetFileName(url)+"';</scrīpt>");