public async Task <ActionResult> OnPost()
{
var rptFileUpload = Path.GetTempPath() + Guid.NewGuid().ToString() + ".txt";
var tempFile = Path.GetTempPath() + Guid.NewGuid().ToString() + ".txt";
using (var fileStream = new FileStream(rptFileUpload, FileMode.Create))
{
await Upload.CopyToAsync(fileStream);
}
ProcessFile.Process(rptFileUpload, tempFile, _hostingEnvironment.ContentRootPath + "\\Data");
return(new RedirectToPageResult("Index"));
}