private void btnLoad_Click(object sender, EventArgs e) { if (_metadata != null) { OpenFileDialog dlg = new OpenFileDialog(); dlg.Filter = "Xml Datei|*.xml"; if (dlg.ShowDialog() == DialogResult.OK) { XmlStream stream = new XmlStream("TileService"); stream.ReadStream(dlg.FileName); _metadata.Load(stream); this.Parameter = _metadata; } } }