ComboBox doesn't display Selected Item

[David]

Hi,

I've run into an issue when using RadComboBox on SharePoint 2013 application page. When I set the SelectedIndex property in code the combobox renders an empty item (see screenshots) but when the dropdown is opened I can see the item is actually selected.

The SharePoint site wasn't customized and there are not JavaScript errors on the page. Also, this issue is not browser specific, I've tested it in different browsers.

Telerik version: 2014.3.1024.45 

HTML Markup:

<telerik:RadComboBox runat="server" ID="radCombo">
    <DefaultItem Text="Select..." Value="-1"></DefaultItem>
</telerik:RadComboBox>

C# Code:

public partial class TestPage : LayoutsPageBase
{
    protected override void OnLoad(EventArgs e)
    {
        try
        {
            base.OnLoad(e);

            if (!Page.IsPostBack)
            {
                radCombo.Items.Add(new RadComboBoxItem("Item 1", "Item 1"));
                radCombo.Items.Add(new RadComboBoxItem("Item 2", "Item 2"));

                radCombo.SelectedIndex = 1;
            }
        }
        catch (Exception exc)
        {

        }
    }
}

[David]

I've uploaded a wrong RadCombo2.jpg picture. Here is the correct one.

[David]

I've done some further testing and it looks like a bug. When I remove DefaultItem from HTML markup it suddenly starts working.

[David]

It was confirmed as a bug by Telerik support.

D.

[Nencho]

Hello,

Indeed this is a bug, which is already forwarded to our developer team for further investigation.

Regards,
Nencho
Telerik