private void FindInTreeCommand(object sender, ExecutedRoutedEventArgs e)
{
FindWindow findWindow = new FindWindow(true);
findWindow.Owner = this;
findWindow.Show();
}
private void richTextBox_Main_FindCommand(object sender, ExecutedRoutedEventArgs e)
{
FindWindow findWindow = new FindWindow(false);
findWindow.Owner = this;
findWindow.Show();
}