private void propertyGridTableElement_SelectedItemChanged(
     object sender,
     RadPropertyGridEventArgs e)
 {
     if (e.Item != null)
     {
         this.helpElement.TitleText   = e.Item.Label;
         this.helpElement.ContentText = e.Item.Description;
     }
     else
     {
         this.helpElement.TitleText   = string.Empty;
         this.helpElement.ContentText = string.Empty;
     }
 }
 void propertyGridTableElement_SelectedItemChanged(object sender, RadPropertyGridEventArgs e)
 {
     this.helpElement.TitleText   = e.Item.Label;
     this.helpElement.ContentText = e.Item.Description;
 }