public async Task <IActionResult> UploadFile(IFormFile file) { //todo move to uploadService var filePath = Path.Combine("E:\\university\\DSPAI\\DSPAI\\", "FileStorage"); if (file.Length > 0) { if (System.IO.File.Exists(filePath)) { System.IO.File.Delete(filePath); } using (var fileStream = new FileStream(Path.Combine(filePath, file.FileName), FileMode.Create)) { await file.CopyToAsync(fileStream); } } // process uploaded files // Don't rely on or trust the FileName property without validation. var engineService = new EngineService(); var image = engineService.GetImageByFile(file); var bitMap = engineService.GetBitMap(image); var grayScaleBitMap = engineService.MakeGrayscale(bitMap); var histogram = engineService.CreateHistogrtam(grayScaleBitMap); return(Ok(new HistogramDTO() { Histogram = histogram, Path = Path.Combine(filePath, file.FileName) })); }