ASP.NET: "Object Required" when repeating LinkButtons in an UpdatePanel
- by MStodd
I have an UpdatePanel which has a Repeater repeating LinkButtons. When I click a LinkButton, the page does a partial postback, then I get a javascript error: "Object required". I tried debugging the javascript, but couldn't get a call stack. If I remove the UpdatePanel, the LinkButtons do a full postback, and they disappear from the page. How can I get this UpdatePanel to work?
<ajax:UpdatePanel ID="wrapperUpdatePanel" runat="server" UpdateMode="Always">
<ContentTemplate>
<asp:Repeater ID="endpointRepeater" runat="server" OnItemDataBound="EndpointDataBound">
<HeaderTemplate>
<div class="sideTabs">
<ul>
</HeaderTemplate>
<ItemTemplate>
<li>
<asp:LinkButton ID="endpointLink" runat="server" OnClick="EndpointSelected" />
</li>
</ItemTemplate>
<FooterTemplate>
</ul>
</div>
</FooterTemplate>
</asp:Repeater>
</ContentTemplate>
</ajax:UpdatePanel>
binding code:
protected void Page_Load(object sender, EventArgs e)
{
if (!this.IsPostBack)
{
this.SelectedEndpoint = Factory.Get<IEndpoint>(Enums.EndPoints.Marketing);
}
IEndpointCollection col = EndpointCollection.GetActivelySubscribingEndpointsForPart(this.Item);
if (this.Item.IsGdsnItem)
col.Add(Factory.Get<IEndpoint>(Enums.EndPoints.Gdsn));
if (col.Count > 0)
col.Insert(0, Factory.Get<IEndpoint>(Enums.EndPoints.Marketing));
this.endpointRepeater.DataSource = col;
this.endpointRepeater.DataBind();
if (this.endpointRepeater.Items.Count > 0)
{
LinkButton lb = this.endpointRepeater.Items[0].FindControl("endpointLink") as LinkButton;
this.EndpointSelected(lb, new EventArgs());
}
}
thanks,
mark
