private void CreateFilterButtons(IPanel filterButtonPanel)
{
const int buttonHeight = 20;
const int buttonWidth = 50; //45;
FilterButton = CreateFilterButton(buttonWidth, buttonHeight);
ClearButton = CreateClearButton(buttonWidth, buttonHeight);
this._buttonLayoutManager = new FlowLayoutManager(filterButtonPanel, _controlFactory);
this._buttonLayoutManager.AddControl(FilterButton);
this._buttonLayoutManager.AddControl(ClearButton);
}