DataSource Issue within RadGrid

[Rengo]

Hello,

I have a RadAutoCompleteBox control within a RadGrid.  I am able to bind the control during the page load.  Although, when I start typing in the RadAutoCompletebox, I receive the following message.



Grid HTML:
 <telerik:GridTemplateColumn HeaderText="Media Title" UniqueName="MediaTitle" HeaderStyle-HorizontalAlign="Center" HeaderStyle-Width="330px"  ItemStyle-Wrap="false">
                <ItemTemplate>
                   <telerik:RadAutoCompleteBox ID="cboMaster" InputType="Text" runat="server" Filter="Contains" Width="300px" DropDownWidth="250px">
                    </telerik:RadAutoCompleteBox>
                  </ItemTemplate>
                </telerik:GridTemplateColumn>

RadAutoCompleteBox Binding (Page_Load):
 cboMaster.DataValueField = "ID";
 cboMaster.DataTextField = "Title";
 cboMaster.DataSource = GetMediaSourceTitles();
 cboMaster.DataBind();

What am I missing so users can type in the RadAutoCompleteBox and display the matching entries?

Thank You in Advance!

[Nencho]

Hello Robert,

I would suggest you to use the OnItemDataBound event, instead of the Page_Load, since the RadGrid is not completely initiated at that stage of the life cycle. Please consider the following implementation:

protected void RadGrid1_ItemDataBound(object sender, GridItemEventArgs e)
    {
        if (e.Item is GridDataItem)
        {
            GridDataItem dataItem = e.Item as GridDataItem;
            RadAutoCompleteBox cboMaster = dataItem["MediaTitle"].Controls[1] as RadAutoCompleteBox;
            cboMaster.DataValueField = "ID";
            cboMaster.DataTextField = "Title";
            cboMaster.DataSource = GetMediaSourceTitles();
            cboMaster.DataBind();
        }
    }

Greetings,
Nencho
the Telerik team