radbuttontelerik/winform/c#: how to remove border of the icon?

Question

I have this searcher

I would like to remove the border of the glass.

It is a RadButtonTextBox in Winform in c#.

I thried modifing the colors of textbox and I didn't get what I need:

this.radtxtFilter.RightButtonItems[0].EnableBorderHighlight = false;
this.radtxtFilter.RightButtonItems[0].BorderHighlightColor = System.Drawing.Color.Red;

How can I do it?

Answer 1

Property ShouldPaint is the answer:

RadButtonElement radButtonElement = new RadButtonElement();
radButtonElement.ImagePrimitive.Image = Resources.TV_search;
radButtonElement.BorderElement.ShouldPaint = false;
this.radtxtFilter.RightButtonItems.Add(radButtonElement);