private async Task UploadFiles(InputFileChangeEventArgs e)
        {
            var res = await UploadToFileServer.Invoke(e);

            if (res.Any())
            {
                Images.AddRange(res);
                await OnUpload.InvokeAsync(Images);
            }
        }
        private async Task UploadFile(InputFileChangeEventArgs e)
        {
            var res = await UploadToFileServer.Invoke(e);

            if (!string.IsNullOrEmpty(res))
            {
                Image = res;
                await OnUpload.InvokeAsync(Image);
            }
        }