public void UploadFile(string source, IResource destinationResource) {
			destinationResource.TimeOut = System.Threading.Timeout.Infinite;

			this.buttonReady.Enabled = false;
			this.labelFileDownload.Text = "Datei (" + destinationResource.DisplayName + ") wird hochgeladen: ";
			this._downloadInProgress = true;
			
			FileInfo file = new FileInfo(source);
			this._worker = new BackgroundWorker();
			this._worker.WorkerReportsProgress = true;
			this._worker.WorkerSupportsCancellation = true;
			this._worker.DoWork += new DoWorkEventHandler((object sender, DoWorkEventArgs e) => {
				Console.WriteLine("BackgroundWorker gestartet");
                
				try {
					using(Stream webStream = destinationResource.GetWriteStream("application/octet-stream", file.Length)) {
						int bufSize = 1024; // 1Kb
						byte[] buffer = new byte[bufSize];
						int bytesRead = 0;
						long totalBytesRead = 0;
						DateTime begin = DateTime.Now;
						using(FileStream fileStream = file.OpenRead()) {
							do {
								if (this._worker.CancellationPending) {
									e.Cancel = true;
									Console.WriteLine("BackgroundWorker wird abgebrochen!");
									break;
								}
                                
								bytesRead = fileStream.Read(buffer, 0, bufSize);
								if (bytesRead > 0) {
									try {
										webStream.Write(buffer, 0, bytesRead);
										totalBytesRead += bytesRead;
										if (DateTime.Now.Subtract(begin).TotalSeconds >= 1) {
											int ProgressPercentage = (int)(totalBytesRead * 100 / file.Length);
											this._worker.ReportProgress(ProgressPercentage, totalBytesRead);
											begin = DateTime.Now;
										}
									} catch(Exception writeException) {
										e.Cancel = true;
										Console.WriteLine("Verbindung wurde unerwartet unterbrochen! (" + totalBytesRead + " bytes)");
										MessageBox.Show(writeException.Message);
										break;
									}
								}
							} while (bytesRead > 0);
						}

						string result = "";
						if (webStream.CanRead) {
							byte[] buffer2 = new byte[8192];
							int bytesRead2 = 0;
							do {
								bytesRead2 = webStream.Read(buffer2, 0, buffer2.Length);
								if (bytesRead2 > 0) {
									result += Encoding.UTF8.GetString(buffer2, 0, bytesRead2);
								}
							} while (bytesRead2 > 0);
						}
						if (result != String.Empty) {
							Console.WriteLine(result);
						}
					}
				} catch(Exception exc) {
					e.Cancel = true;
					MessageBox.Show(exc.Message);
				}
			}
			);
			this._worker.ProgressChanged += new ProgressChangedEventHandler((object sender, ProgressChangedEventArgs e) => {
				int ProgressPercentage = Convert.ToInt32((long)e.UserState * 100.0 / file.Length);
				this.labelFileDownload.Text = String.Format("Datei ({0}) wird hochgeladen: {1}/{2}", destinationResource.DisplayName, this.GetBestSizeFormat((long)e.UserState), this.GetBestSizeFormat(file.Length));
				this.labelPercentage.Text = ProgressPercentage.ToString() + "%";
				progressBarFileDownload.Value = ProgressPercentage;
			}
			);
			this._worker.RunWorkerCompleted += new RunWorkerCompletedEventHandler((object sender, RunWorkerCompletedEventArgs e) => {
				Console.WriteLine("BackgroundWorker fertig!");

				if (!e.Cancelled) {
					progressBarFileDownload.Value = 100;
					this.labelFileDownload.Text = String.Format("Datei ({0}) wird hochgeladen: {1}/{2}", destinationResource.DisplayName, this.GetBestSizeFormat(file.Length), this.GetBestSizeFormat(file.Length));
					this.labelPercentage.Text = "100%";
				}
				this._downloadInProgress = false;
				this.buttonReady.Enabled = true;
			}
			);
			this._worker.RunWorkerAsync();
		}