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ReportViewer in UpdatePanel in PanelBar not working

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PanelBar

This is a migrated thread and some comments may be shown as answers.

Jeremy asked on 13 Nov 2014, 10:19 PM

I'm trying to load a ReportViewer report inside a RadPanelItem on a RadPanelBar_ItemClick event so that it doesn't load on pageload but only when the user expands that PanelItem. This seems to work but it causes the page to postback and the user sees the screen refresh. I'd like to avoid this by using an updatepanel. But when I wrap the contents of my RadPanelItem in an updatepanel, I get the "Generating Report" and pinwheel but when it's done, nothing is displayed.

<telerik:RadPanelBar runat="server" ID="RadPanelBar" ExpandMode="MultipleExpandedItems" Width="100%" ExpandAnimation-Type="InBack" OnItemClick="RadPanelBar_ItemClick">

<Items>

<telerik:RadPanelItem Text="myReport" Value="myReport">

<ContentTemplate>

<div style="height: 500px">

<asp:UpdatePanel ID="UpdatePanel3" runat="server" style="width:100%">

<Triggers>

<asp:AsyncPostBackTrigger ControlID="RadPanelBar" />

</Triggers>

<ContentTemplate>

<telerik:ReportViewer ID="ReportViewer1" runat="server" Width="100%" Height="95%" ToolbarVisible="false"></telerik:ReportViewer>

</ContentTemplate>

</asp:UpdatePanel>

</div>

</ContentTemplate>

</telerik:RadPanelItem>

</Items>

</telerik:RadPanelBar>

protected void RadPanelBar_ItemClick(object sender, RadPanelBarEventArgs e)

{

if (e.Item.Value == "myReport")

{

TheReport report01 = new TheReport();

chargeReport.ReportParameters["ID"].Value = this._myID;

ReportViewer1.ReportSource = report01;

ReportViewer1.Visible = true;

}

I could be just missing something simple but I've been looking at this for a while now and nothing.

6 Answers, 1 is accepted

answered on 20 Nov 2014, 05:26 PM

Hi Stef, thanks for the reply. I'll take a look at these steps. Hopefully this will solve my problem. However, this support article seems to be focused on making the toolbar look better. I don't want it to look better. I want to not have to display it and still get the report to display in an update panel. It works when it's not in an update panel but doesn't display the report in the update panel. It works in the update panel if the toolbar is visible but doesn't work if the toolbar is invisible. Doesn't seem to be a toolbar styling issue to me.

answered on 21 Nov 2014, 04:49 PM

Hi Jeremy,

The report is rendered as HTML, where the additional resources as images, CSS are served by the Telerik.ReportViewer.axd handler. Thus the settings in the provided KB article relate to both the ASP.NET ReportViewer and its content. Once the Toolbar is loaded correctly, the report must be loaded as well.

In case the settings do not help you, send us a demo project to test it at our end. Include also details about the tested browsers.

Regards,
Stef
Telerik

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