New Post: Cancel a SFTP upload or download

using (var sftpClient = new SftpClient(connectionInfo))
            {
                sftpClient.Connect();
                var list = sftpClient.ListDirectory(string.Empty);

                var asynch = sftpClient.BeginUploadFile(File.OpenRead(@"D:\data8.xml"), "small.txt", true, delegate(IAsyncResult ar)
                {
                    Console.WriteLine("callback called");
                    sftpClient.EndUploadFile(ar);
                }, null, (a) =>
                {
                    Console.WriteLine(a);
                }) as SftpUploadAsyncResult;

                Thread.Sleep(1000 * 2);
                asynch.IsUploadCanceled = true;

                asynch.AsyncWaitHandle.WaitOne();
                Console.WriteLine("Finished asynch");
                sftpClient.EndUploadFile(asynch);
                Console.WriteLine("EndUploadFile called");
            }