strange border appears when inherit from raddropdownlist

[Frank Beerens]

Hello,

I created a new combobox class and used the RadDropDownList as base class, but when I override the CreateDropDownListElement function and return my own element, a black border appears:

public class TestComboBox : RadDropDownList
    {
        public override string ThemeClassName
        {
            get
            {
                return typeof(RadDropDownList).FullName;
            }
            set
            {
                base.ThemeClassName = value;
            }
        }

        protected override RadDropDownListElement CreateDropDownListElement()
        {
            //return base.CreateDropDownListElement();
            return new TestElement(this);
        }
    }

    public class TestElement : RadDropDownListElement
    {
        public TestElement()
        {
            //
        }

        public TestElement(object owner)
            : base(owner)
        {
            //
        }

    }

[Frank Beerens]

Never mind... I have the solution: inherit from RadDropDownListEditorElement

[Stefan]

Hi Frank,

I am glad you have found a solution for your case. For more information about it take a look at the following article.
 
Regards,
Stefan
Telerik