private async Task <string> UploadFile(IFormFile formFile)
{
if (formFile == null || formFile.Length == 0)
{
return(null);
}
using var ms = new MemoryStream();
formFile.CopyTo(ms);
ms.Seek(0, SeekOrigin.Begin);
var filePath = await _blobHelper.Upload(formFile.FileName, ms);
return(filePath);
}