private void btnDelete_Click(object sender, RoutedEventArgs e) { if (selectedEnvironment == null) { return; } MessageBoxResult result = MessageBox.Show("Are you sure to delete this?", "WARNING!", MessageBoxButton.YesNo); if (result == MessageBoxResult.No) { return; } try { Mouse.OverrideCursor = Cursors.Wait; IndoorPositioningClient.DeleteEnvironment(selectedEnvironment); /* remove selected item */ selectedEnvironment = null; selectedIndex = 0; /* Load the list again */ Load(); Mouse.OverrideCursor = Cursors.Arrow; } catch (Exception ex) { Mouse.OverrideCursor = Cursors.Arrow; MessageBox.Show(ex.ToString()); } }