使用ServiceStack下载文件HttpResult：如何为下载的内容指定文件名？

Question

I am using ServiceStack for a simple web application. The main purpose is to let a user download a file. I am using an HttpResult as follows:

public class FileDownloadService : Service
{
 public object Any()
 {
  string fileFullPath = "...";
  string mimeType = "application/pdf";
  FileInfo fi = new FileInfo(fileFullPath);

  byte[] reportBytes = File.ReadAllBytes(fi.FullName);
  result = new HttpResult(reportBytes, mimeType);

  return result;
 }
}

This opens a dialog in the user's browser and the user can specify where to save the file. A default name is specified, which is the name of the restPath of ServiceStack.

My question is: is it possible to specify a custom file name for when the user chooses to save (changing the default one)? I tried to work with HttpResult properties, but no luck. Thanks in advance!

Answer 1

You should set the 'Content-Disposition' header on the HTTP result. That allows to set the filename:

 public object Any()
 {
     string fileFullPath = "...";
     string mimeType = "application/pdf";
     FileInfo fi = new FileInfo(fileFullPath);

     byte[] reportBytes = File.ReadAllBytes(fi.FullName);
     result = new HttpResult(reportBytes, mimeType);

     result.Headers.Add("Content-Disposition", "attachment;filename=YOUR_NAME_HERE.pdf;");    

     return result;
 }

Answer 2

I have found the solution. I was deceived by the readonly properties of the HttpResult. In order to change the default file name, I discovered that I have to add the following line, that treats the content-disposition:

result.Headers[HttpHeaders.ContentDisposition] = "attachment; filename=\"UserSurname_UserName.pdf\"";

Thank you all for your time!

Answer 3

If I understood your question correctly, what you want is the user wants to rename the file. This is nothing to do with the server. The user has to do some changes in the brwoser he is uses.

eg Firefox - Tools > Options > General

Then check the "Always ask me where to save files"

Chrome - Settings > Downloads

Then check the "Ask where to save each file before "

Then it will open file browser where to save, you may change your file name what ever your wanted