如何设置在ASP.NET MVC的Web API下载的文件名 [英] How to set downloading file name in ASP.NET MVC Web API

问题描述

在我ApiController类中，我有以下的方法来下载由服务器创建的文件。

In my ApiController class, I have following method to download a file created by server.

    public HttpResponseMessage Get(int id)
    {
        try
        {
            string dir = HttpContext.Current.Server.MapPath("~"); //location of the template file
            Stream file = new MemoryStream();
            Stream result = _service.GetMyForm(id, dir, file);
            if (result == null)
            {
                return Request.CreateResponse(HttpStatusCode.NotFound);
            }
            result.Position = 0;
            HttpResponseMessage response = new HttpResponseMessage();
            response.StatusCode = HttpStatusCode.OK;
            response.Content = new StreamContent(result);
            return response;
        }
        catch (IOException)
        {
            return Request.CreateResponse(HttpStatusCode.InternalServerError);
        }
    }

一切工作完美的除了默认的下载文件名是其ID，因此用户可能在另存为对话框每次都输入他/她自己的文件名。有什么办法来设置在code默认文件名以上？

Everything is working perfect except that default downloading file name is its id so user might have to type his/her own file name at save as dialog each time. Is there any way to set a default file name in the code above?

推荐答案

您需要设置内容处置头对的Htt presponseMessage ：

HttpResponseMessage response = new HttpResponseMessage();
response.StatusCode = HttpStatusCode.OK;
response.Content = new StreamContent(result);
response.Content.Headers.ContentDisposition = new ContentDispositionHeaderValue("attachment")
{
    FileName = "foo.txt"
};

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