FileResult method is not downloading file.

Question

when i click from browser "Download button" it will download my log file which is present in App_Data. my code was

 

[HttpGet]

public FileResult LogsDownload()

{

return File("~//App_Data//log.txt","text/plain","log.txt");

}

 

and i am calling this method through ajax from view page.But it returning error that "Process cannot access this file because it is using by another process".

 plz help me.Thank you