解决Webservice内存溢出

public class FileExercise : System.Web.Services.WebService    {        [WebMethod]        public void HelloWorld()        {            // 生成临时文件            string tFName = System.IO.Path.GetTempFileName();//@"C:\ResponseStream.txt"            System.IO.FileStream stream = System.IO.File.Open(tFName, System.IO.FileMode.OpenOrCreate, System.IO.FileAccess.ReadWrite);            XmlWriter writer = XmlWriter.Create(stream);            writer.WriteStartDocument();            writer.WriteRaw("<soap:Envelope xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" xmlns:xsd=\"http://www.w3.org/2001/XMLSchema\" xmlns:soap=\"http://schemas.xmlsoap.org/soap/envelope/\">");            writer.WriteRaw("<soap:Body>");            writer.WriteStartElement(MethodInfo.GetCurrentMethod().Name + "Response", @"http://tempuri.org/");            writer.Flush();            // 返回的主体            writer.WriteString("Hello word!");            // 将内存缓冲数据写进磁盘 ，当数据量大的时候分批处理并及时写入硬盘，可以降低内存压力            writer.Flush();            writer.WriteEndElement();            writer.WriteRaw("</soap:Body>");            writer.WriteRaw("</soap:Envelope>");            writer.WriteEndDocument();            writer.Flush();            writer.Close();            stream.Close();            HttpContext context = HttpContext.Current;            //context.Response.ContentType = "application/soap+xml; charset=utf-8";            context.Response.WriteFile(tFName);            return;        }    }}