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Request a Feature Report a Bug
Unplanned
Last Updated: 17 Apr 2024 14:43 by ADMIN
Michael
Created on: 15 Jun 2020 08:20
Category: DropDownList
Type: Bug Report
0
RadDropDownList: exception when trying to change the selected item in SelectedValueChanged event
When I select items 1 through 4 in the drop-down list, the expected event occurs (the selected item is removed from the drop-down list and added to the list view).  When I select the last item in the list (item 5), the item is added to the list and then I get the ArgumentOutOfRangeException. 
Attached Files:
1 comment
ADMIN
Nadya | Tech Support Engineer
Posted on: 15 Jun 2020 09:31

Hello Michael,

To workaround this you can use the SelectedIndexChanging event:

private void radDropDownList1_SelectedIndexChanging(object sender, Telerik.WinControls.UI.Data.PositionChangingCancelEventArgs e)
{
    try
    {
        e.Cancel = true;

        ListItem selectedItem = (ListItem)radDropDownList1.Items[e.Position].DataBoundItem;

        if (selectedItem == null || selectedItem.ID == 0)
            return;

        lvListItems.Add(selectedItem);
        cbListItems.Remove(selectedItem);

    }
    catch (Exception ex)
    {
        MessageBox.Show(ex.Message);
    }
}

I hope this helps.

Regards,
Nadya
Progress Telerik

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