ASP.NET(C#) Web Api通过文件流下载文件的实例

using System;using System.Collections.Generic;using System.IO;using System.Linq;using System.Net;using System.Net.Http;using System.Net.Http.Headers;using System.Web.Http;namespace DownloadFileFromWebApi.Controllers{ [RoutePrefix("download")] public class DownloadController : ApiController { [Route("get_demo_file")] public HttpResponseMessage GetFileFromWebApi() {  try  {  var FilePath = System.Web.Hosting.HostingEnvironment.MapPath(@"~/download/EditPlus64_xp85.com.zip");  var stream = new FileStream(FilePath, FileMode.Open);  HttpResponseMessage response = new HttpResponseMessage(HttpStatusCode.OK);  response.Content = new StreamContent(stream);  response.Content.Headers.ContentType = new MediaTypeHeaderValue("application/octet-stream");  response.Content.Headers.ContentDisposition = new ContentDispositionHeaderValue("attachment") {   FileName="Wep Api Demo File.zip"  };  return response;  }  catch  {  return new HttpResponseMessage(HttpStatusCode.NoContent);  } } }}