private void Help_Add_Liquid_Click(object sender, RoutedEventArgs e)
 {
     HelpWindow hw1 = new HelpWindow();
         hw1.Show();
 }
 private void Help_Add_Pipeline_Click(object sender, RoutedEventArgs e)
 {
     /*
     var Grid_Add_Pipeline = this.Content as MyGrid;
     var Help_Add_Pipeline = Grid_Add_Pipeline.Children[3] as MyButton;
     MessageBox.Show("Выбран пункт Справка в окне добавления всасывающего трубопровода");
     */
     HelpWindow hw1 = new HelpWindow();
     hw1.Show();
 }