Selection out of range

[Jason Van Dusen]

On my web site some users are getting a "Selection out of range" error on one of my combo boxes when I populate it with values.  I can' seem to reproduce this error.  Any ideas on what might cause this problem?  Below is the code that I am using to populate the combobox.    Any help would be greatly appreciated.

Jason

Dim blankStreet As New mystreetTypeObject
Dim streetTypes As New myStreetTypeObjectList

With blankStreet
.AddressType = "N/A"
.TypeDescription = "N/A"
End With
 
'Retrieve the list of available street types from our database.
 streetTypes = GetStreetTypes()

If (streetTypes IsNot Nothing) Then
 
Dim stTypes As New List(Of mystreetTypeObject)

For Each streetType As mystreetTypeObject In myStreetTypeObjectList.StreetTypes

stTypes.Add(streetType)

Next
 
ddlStreetType.DataTextField = "Description"
ddlStreetType.DataValueField = "AddressType"

 stTypes.Insert(0, blankStreet)

ddlStreetType.DataSource = stTypes
ddlStreetType.DataBind()

Else

Throw New Exception("Unable to retrieve the list of available street types.")

End If

[Veselin Vasilev]

Hello Jason,

I am afraid the provided information is not enough for me to determine what could be the cause of the problem.
If you could strip your project to a small and runnable one and send it to us - we will test it locally.

Best wishes,
Veskoni
the Telerik team

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[Rory]

I was having the same issue. I fixed it by removing the ComboBox outside of my Ajaxified <DIV> Seems like when its ajaxified if you can change selections really fast or enter some junk text and it will throw this error.

[Jason Van Dusen]

Thank you very much for the reply.  How do you remove it from the Ajaxified div?  What exactly do you mean by that?  Are you referring to an update panel?  Talk to you soon

Jason

[Rory]

I'll try to demonstrate in code. So i set the ajaxmanger to a DIV pretty much behaves just like a panel. Somebody recommended this to me in the past but I'd beware it seems to create some interesting side effects like this. So when I say I removed it from being Ajxified I just simply take it outside of the DIV and its no longer being Ajaxified by my AjaxManager.

<div id="ajaxdiv" runat="server">

                        <telerik:RadComboBox ID="cboRecipient" runat="server"
                            EnableEmbeddedSkins="false"
                            EnableLoadOnDemand="true"
                            AllowCustomText="true"
                            Height="150px"
                            MarkFirstMatch="true"
                            OnClientBlur="SetDiaryCount"
OnClientSelectedIndexChanged="FireComboBoxCustomRequiredFieldValidator">
                        </telerik:RadComboBox>

                        <asp:CustomValidator ID="cvRecipient" runat="server"
                            ClientValidationFunction="ComboBoxCustomRequiredFieldValidator"
                            ControlToValidate="cboRecipient"
                            Display="Dynamic"
                            EnableClientScript="true"
                            ValidateEmptyText="true"
                            ErrorMessage="<br />Valid Recipient is required">
                        </asp:CustomValidator>

</div>


<telerik:RadAjaxManager EnablePageHeadUpdate="false" ID="Rap1" runat="server" ClientEvents-OnResponseEnd="DisplayMessages" EnableAJAX="true" EnableEmbeddedScripts="true" EnableTheming="true">
                <AjaxSettings>
                    <telerik:AjaxSetting AjaxControlID="ajaxDiv">
                        <UpdatedControls>
                            <telerik:AjaxUpdatedControl ControlID="ajaxDiv"
                                      LoadingPanelID="alp1" />
                        </UpdatedControls>
                    </telerik:AjaxSetting>
                </AjaxSettings>
 </telerik:RadAjaxManager>