private void buttonQuickSet_Click(object sender, EventArgs e) { string quickSetup = comboBoxQuickSetup.Text; if (String.IsNullOrEmpty(quickSetup)) { return; } try { _tvCardStbSetup.SetToXml(quickSetup); } catch (Exception ex) { MessageBox.Show(ex.ToString(), "Failed to quick-set external channel setup", MessageBoxButtons.OK, MessageBoxIcon.Error); } }