public async Task <string> UploadImageAsBlob(IFormFile file)
{
if (file != null && (file.ContentType.StartsWith("image") || file.ContentType.StartsWith("audio") || file.ContentType.StartsWith("video")))
{
_stream = file.OpenReadStream();
string extension = Path.GetExtension(file.FileName);
_blockBlob = _container.GetBlockBlobReference(FileNameHelper.CreateFileName(extension));
await _blockBlob.UploadFromStreamAsync(_stream);
return(_blockBlob.Name);
}
return(null);
}