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..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);
  }
 }
 }
}