public async Task UploadAsync(string pathFile, string pathSave, UploadProgress progress, CancellationToken cancelToken = default)
{
Stream stream = new FileStream(pathFile, FileMode.Open, FileAccess.Read, FileShare.ReadWrite);
var uploadLink = await GetUploadLinkAsync(pathSave);
var fileName = Path.GetFileName(((FileStream)stream).Name);
var streamContent = new YandexStreamContent(stream);
streamContent.ProgressChanged += (bytes, currBytes, totalBytes) => progress.UpdateProgress(currBytes, totalBytes, fileName);
var content = new MultipartFormDataContent {
{ streamContent, "file", fileName }
};
using var yandHttpClient = new YandexHttpClient(_yandUploader.Token);
await yandHttpClient.PostAsync(uploadLink.Href, content, cancelToken);
}