相关疑难解决方法(0)

问题

我想在我的ASP.Net Web API Controller中返回一个文件,但我的所有方法都返回HttpResponseMessage为JSON.

代码到目前为止

public async Task<HttpResponseMessage> DownloadAsync(string id)
{
    var response = new HttpResponseMessage(HttpStatusCode.OK);
    response.Content = new StreamContent({{__insert_stream_here__}});
    response.Content.Headers.ContentType = new MediaTypeHeaderValue("application/octet-stream");
    return response;
}

当我在浏览器中调用此端点时,Web API会返回设置HttpResponseMessage为HTTP Content Header 的as JSON application/json.