public async Task <bool> UploadFileAsync(IFormFile file)
        {
            try
            {
                var dir = Path.Combine(Hosting.ContentRootPath, "wwwroot", "Temp");
                _iOService.CreateDirectoryIfNotExist(dir);

                var path = Path.Combine(dir, file.FileName);

                //save file in serve to get it's physical path
                if (await _iOService.WriteFileAsync(file, path))
                {
                    //upload saved file to azure
                    CloudBlockBlob cloudBlockBlob = cloudBlobContainer.GetBlockBlobReference(file.FileName);
                    await cloudBlockBlob.UploadFromFileAsync(path);

                    //delete temp file after upload it to azure
                    _iOService.DeleteFileIfExist(path);

                    return(true);
                }
            }
            catch { }
            return(false);
        }