Populate a RadListView with data, apply ListViewType.DetailsView and disable the ShowGridLines property.
With the ControlDefault theme it works, but if you apply the CrystalDark theme, the grid lines are still visible
I have also updated your Telerik points.
Currently, the possible solution that I can suggest is to use the following code snippet:
this.radListView1.ShowGridLines = false;
private void radListView1_VisualItemFormatting(object sender, Telerik.WinControls.UI.ListViewVisualItemEventArgs e){ e.VisualItem.DrawBorder = this.radListView1.ShowGridLines;}private void radListView1_CellFormatting(object sender, Telerik.WinControls.UI.ListViewCellFormattingEventArgs e){ e.CellElement.DrawBorder = this.radListView1.ShowGridLines;}