[Solved] RadDropDown - Dropdown Items and Autocomplete

[Dean]

Good Day,

I've noticed that if you have a databound raddropdown control and have it on an Autocomplete mode of suggestappend I get the follow wierd dropdown list problem. Please see link below for screenshot.

http://oi54.tinypic.com/5aromf.jpg

To reproduce the same thing this is some sample code. It's just a Form with the RadDropDown Control on it. Now when the form opens with the raddropdown control on it click on the DropDown Arrow to view all the People, when the dropdown is still open type "R" and you will see the problem I'm having. Is there a way around this? Please let me know if you need any more information.

Imports Telerik.WinControls.UI

Public Class frmMain
    Inherits RadForm

    Private Sub frmMain_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
        RadDropDownList1.AutoCompleteMode = AutoCompleteMode.SuggestAppend
        RadDropDownList1.Text = String.Empty
        RadDropDownList1.DataSource = GetPeople()
        RadDropDownList1.DisplayMember = "Name"
        RadDropDownList1.ValueMember = "Name"
    End Sub

    Private Function GetPeople() As List(Of Person)
        Dim oPeople As New List(Of Person)
        oPeople.Add(New Person("Dean"))
        oPeople.Add(New Person("Ryan"))
        oPeople.Add(New Person("Richard"))
        oPeople.Add(New Person("Duncan"))
        oPeople.Add(New Person("Peter"))
        oPeople.Add(New Person("Tony"))
        oPeople.Add(New Person("Jaco"))
        oPeople.Add(New Person("Marc"))
        oPeople.Add(New Person("Lucy"))
        oPeople.Add(New Person("Mike"))
        Return oPeople
    End Function
End Class

Public Class Person
    Public Property Name As String
    Public Sub New(ByVal sName As String)
        Name = sName
    End Sub
End Class

[Richard Slade]

Hi Dean,

Hope you're well. I've tried this out but I was unable to replicate it.
Here is a small Jing video of it on my Windows 7 64bit machine running the latest 2010 Q3 version
Link to video

Am I right in remembering that you're not currently on the latest version?
Hope this helps, but let me know if you need more information
Richard

[Richard Slade]

Dean,

My apologies, I didn't read your post well enough. I can replicate it if I first open the drop down list. I will look for a workaround for you and let you know as soon as possible.
Richard

[Richard Slade]

Hi again,

ok, this seems to be a simple enough one. Please could you try the following. This seems to work for me unless I've missed something obvious.

Private Sub RadDropDownList1_TextChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles RadDropDownList1.TextChanged
    If Me.RadDropDownList1.DropDownListElement.IsPopupOpen Then
        Me.RadDropDownList1.DropDownListElement.ClosePopup()
    End If
End Sub

All the best
Richard

[Dean]

Thank you very much for the workaround Richard, do you think that this should be reported as a bug to the telerik team for the next upcoming Service Pack?

[Richard Slade]

Hi Dean,

Yes, I think this should be reported, though Telerik do review all forum posts within 72 hours and the SP1 for Q3 2010 came out yesterday. I've just tested it with that and the issue still exists.
Glad I could help
Richard

[Peter]

Hello,

Thank you for writing.

Actually, you have seen the AutoSuggest DropDown Popup. It is normal to see both popups and this behavior is by design. We are following the behavior of the standard Microsoft ComboBox. You could apply the solution provided by Richard or you can turn off the AutoSuggest Mode.

I hope this helps.

Kind regards,
Peter
the Telerik team

[Dean]

Hi,

Thank you for clarifying that this is by design. I will follow Richards recommendations for a solution.

Kind Regards