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RAD AjaxManager issue with Telerik.ReportViewer.WebForms.ReportViewer control

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Ajax

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

Joshua asked on 10 Dec 2013, 11:20 PM

Hi, Everyone,

I’m having some issues with the RAD AjaxManager/Rad AjaxManager Proxy working with the reporting WebForms.ReportViewer that I can’t get around. I’m not sure if this is a Reporting issue or an ASP.Net issue, but I’m going to post here initially.

A little background: I just upgraded both the ASP.Net AJAX and Reporting toolsets from Q3 2012 SP1 to the Q3 2013 version. The scenario I’ll present below has been working with no issues in the Q3 2012 SP1 version and broke after the upgrade.

Basically, I’ve got a master page that has an AJAX Manager control and a content page that has the AjaxManager Proxy. Also on the content page, I’ve got a button and an ASP Panel that has a ReportViewer control and an ASP Label. The AjaxManager Proxy has been configured with AJAX settings for the button, with the ASP Panel identified as the control to be updated. The markup for this is below (this is inside the content page’s ASP Content tag):

<div>

<telerik:RadAjaxManagerProxy ID="RadAjaxManagerProxy1" runat="server">

<AjaxSettings>

<telerik:AjaxSetting AjaxControlID="RadButton1">

<UpdatedControls>

<telerik:AjaxUpdatedControl ControlID="pnlQuoteView" UpdatePanelCss />

</UpdatedControls>

</telerik:AjaxSetting>

</AjaxSettings>

</telerik:RadAjaxManagerProxy>

<table border="0" cellpadding="0" cellspacing="0" width="1300" style="border-style: solid; border-width: 1px; margin-left: auto; margin-right: auto; border-color: rgb(223, 233, 245);">

<tr>

<td>

<telerik:RadButton ID="RadButton1" runat="server" OnClick="RadButton1_Click" Text="RadButton">

</telerik:RadButton>

<br />

<asp:Panel ID="pnlQuoteView" runat="server" Width="100%">

<asp:Label ID="lblTest" runat="server"></asp:Label>

<telerik:ReportViewer ID="rvQuote" runat="server" ShowDocumentMapButton="False" ShowHistoryButtons="False"

ShowParametersButton="False" ShowRefreshButton="False" Width="100%" Height="600px"

ViewMode="Interactive" ShowExportGroup="False" ShowPrintButton="False" ProgressText="Generating quote..."></telerik:ReportViewer>

</asp:Panel>

</td>

</tr>

</table>

</div>

In the Page Load event for the content page, I’m setting the Visible property of the ReportViewer to false, as I don’t want it to display until the button is clicked. I’m doing the same thing with the Label.

The problem is coming when I try to set the Visible property of the ReportViewer to true in the button click event (see the code below):

protected void Page_Load(object sender, EventArgs e)

{

this.rvQuote.Visible = false;

this.lblTest.Visible = false;

}

protected void RadButton1_Click(object sender, EventArgs e)

{

this.lblTest.Visible = true;

this.lblTest.Text = "help!";

rvQuote.Visible = true;

}

When I do this, all AJAX stops working on the page because of an unhandled exception in the Telerik.Web.UI.WebResourse.axd:

JavaScript runtime error: Sys.WebForms.PageRequestManagerServerErrorException: Value cannot be null. Parameter name: key.

And the following gets written to the machine's Application Event Log for the unhandled exception:

Exception information:

Exception type: ArgumentNullException

Exception message: Value cannot be null.

Parameter name: key

at System.Collections.Generic.Dictionary`2.FindEntry(TKey key)

at System.Collections.Generic.Dictionary`2.TryGetValue(TKey key, TValue& value)

at Microsoft.VisualStudio.Web.PageInspector.Runtime.WebForms.SelectionMappingRenderTraceListener.GetLiteralTraceData(LiteralControl literal, TraceData& data)

at Microsoft.VisualStudio.Web.PageInspector.Runtime.WebForms.SelectionMappingRenderTraceListener.GetTraceData(Object renderedObject)

at Microsoft.VisualStudio.Web.PageInspector.Runtime.WebForms.SelectionMappingRenderTraceListener.EndRendering(TextWriter writer, Object renderedObject)

at System.Web.UI.RenderTraceListener.RenderTraceListenerList.EndRendering(TextWriter writer, Object renderedObject)

at System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter)

at System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter)

at System.Web.UI.Control.RenderControl(HtmlTextWriter writer)

at System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children)

at System.Web.UI.Control.RenderChildren(HtmlTextWriter writer)

at System.Web.UI.WebControls.WebControl.RenderContents(HtmlTextWriter writer)

at System.Web.UI.WebControls.WebControl.Render(HtmlTextWriter writer)

at System.Web.UI.WebControls.CompositeControl.Render(HtmlTextWriter writer)

at Telerik.ReportViewer.WebForms.ReportViewer.Render(HtmlTextWriter writer)