public void InsertAdditionalRenderer(int position, IGridColumnHeaderRenderer renderer)
 {
     if (_additionalRenders.Contains(renderer))
     {
         throw new InvalidOperationException("This renderer already exist");
     }
     _additionalRenders.Insert(position, renderer);
 }
 public void AddAdditionalRenderer(IGridColumnHeaderRenderer renderer)
 {
     if (_additionalRenders.Contains(renderer))
     {
         throw new InvalidOperationException("This renderer already exist");
     }
     _additionalRenders.Add(renderer);
 }
 public void InsertAdditionalRenderer(int position, IGridColumnHeaderRenderer renderer)
 {
     if (_additionalRenders.Contains(renderer))
         throw new InvalidOperationException("This renderer already exist");
     _additionalRenders.Insert(position, renderer);
 }
 public void AddAdditionalRenderer(IGridColumnHeaderRenderer renderer)
 {
     if (_additionalRenders.Contains(renderer))
         throw new InvalidOperationException("This renderer already exist");
     _additionalRenders.Add(renderer);
 }