private void Height_control__TextInput(object sender, Avalonia.Input.TextInputEventArgs e)
 {
     if (height_control_.Text.IsNumeric() == true)
     {
         this.HeightOfSelectedControl = Int32.Parse(height_control_.Text);
     }
 }
 private void Width_control__TextInput(object sender, Avalonia.Input.TextInputEventArgs e)
 {
     if (width_control_.Text.IsNumeric() == true)
     {
         this.WidthOfSelectedControl = Int16.Parse(width_control_.Text);
     }
 }