private void Graf1_KeyUp(object sender, KeyEventArgs e)
 {
     if (e.Key.Equals(Key.C))
     {
         PlotterConfigurator pc = new PlotterConfigurator();
         pc.DataContext = Graf1;
         pc.ShowDialog();
     }
 }
    private void Graf1_KeyUp(object sender, KeyEventArgs e)
    {
      if (e.Key.Equals(Key.C))
      {
        PlotterConfigurator pc = new PlotterConfigurator();
        pc.DataContext = Graf1;
        pc.ShowDialog();
      }

    }