AutoCompleteBox in a RadGrid bound but no results

[Kenyon]

Hi there,

I have an auto complete box in my RadGrid.  I've got it binding with ItemDataBound and populating with a previously selected value, but it doesn't start auto-completing when I clear out the data and type something new.  I've had a Google around, but haven't been able to find where I'm going wrong.

<telerik:GridTemplateColumn DataField="ProgramOfficerName"
    FilterControlAltText="Filter TemplateColumnArgumentOfficerName column"
    HeaderText="Argument Officer Name 2"
    UniqueName="TemplateColumnArgumentOfficerName">
    <ItemTemplate>
        <telerik:RadAutoCompleteBox ID="radAutoCompleteTest" Runat="server" InputType="Text" TextSettings-SelectionMode="Single">
            <TextSettings SelectionMode="Single" />
        </telerik:RadAutoCompleteBox>
    </ItemTemplate>
</telerik:GridTemplateColumn>

Protected Sub gridCommentingOfficers_ItemDataBound(sender As Object, e As Telerik.Web.UI.GridItemEventArgs) Handles gridCommentingOfficers.ItemDataBound
    Dim item As GridDataItem = TryCast(e.Item, GridDataItem)
    Dim dtUsers As DataTable = _functions.Get_AsDataTable("select eDistinguishedName, eUserName from Metastorm.dbo.eUser")

    If Not item Is Nothing Then
        Dim auto As RadAutoCompleteBox = item.FindControl("radAutoCompleteTest")
        auto.Entries.Add(New AutoCompleteBoxEntry(item("columnProgramOfficerName").Text, item("columnProgramOfficerLogin").Text))
        auto.DataTextField = "eDistinguishedName"
        auto.DataValueField = "eUserName"
        auto.DataSource = dtUsers
        auto.DataBind()
    End If
End Sub

[Nencho]

Hello Kenyon,

The RadAutoCompleteBox uses callbacks, in order to request its underlying datasource. Each time a character is typed, the callback is trigger for querying the entries. Since the control uses callback mechanism it should be supplied with its datasource not later than the Page_Load event. As I can see, you are providing the datasource at ItemDataBound event handler. Please consider using the Page_Load event, as suggested above.

Regards,
Nencho
Telerik