protected override void CreateControlHierarchy() { CreateIndentCells(); if (RenderHelper.AddFilterRowTemplateControl(this, LeafColumns.Count)) { return; } for (var leafIndex = 0; leafIndex < LeafColumns.Count; ++leafIndex) { Cells.Add( CreateFilterCell( LeafColumns[leafIndex].Column, RenderHelper.ShouldRemoveRightBorder(leafIndex) ) ); } }