How to get Progress Status while uploading/ downloading a file ( in .Net ) ?

Here's a sample of uploading using upload sessions:

private async Task ChunkUpload(String path, FileStream stream, int chunkSize)
{
 int numChunks = (int)Math.Ceiling((double)stream.Length / chunkSize);
 byte[] buffer = new byte[chunkSize];
 string sessionId = null;
 for (var idx = 0; idx < numChunks; idx++)
 {
 var byteRead = stream.Read(buffer, 0, chunkSize);

 using (var memSream = new MemoryStream(buffer, 0, byteRead))
 {
 if (idx == 0)
 {
 var result = await this.client.Files.UploadSessionStartAsync(memSream);
 sessionId = result.SessionId;
 }
 else
 {
 var cursor = new UploadSessionCursor(sessionId, (ulong)(chunkSize * idx));

 if (idx == numChunks - 1)
 {
 await this.client.Files.UploadSessionFinishAsync(cursor, new CommitInfo(path), memSream);
 }
 else
 {
 await this.client.Files.UploadSessionAppendAsync(cursor, memSream);
 }
 }
 }
 }
}