Windows Forms: ToolStripDropDown - Remove or Paint border

Question

I have a ToolStripDropDown control labeled 'options' here:

I want to either remove the border or paint it a certain color to make it flush. Do I need a new renderer or something to do this? I've been unable to find an example online.

Answer 1

Yes, you have to make your own renderer:

public class BorderlessRenderer : ToolStripProfessionalRenderer {

  public BorderlessRenderer () {
    RoundedEdges = false;
  }

  protected override void OnRenderToolStripBorder(ToolStripRenderEventArgs e) {
    //base.OnRenderToolStripBorder(e);
  }
}

Then apply it to your ToolStrip control:

toolStrip1.Renderer = new BorderlessRenderer();