radgrid Export to PDF commanditem and ajax

[Greg]

I have a following code in my radgrid:

<CommandItemTemplate>
    <asp:LinkButton ID="ExportToPdfButton" runat="server" CommandName="ExportToPdf" CssClass="pdfButton" ></asp:LinkButton>
</CommandItemTemplate>

The radgrid is ajaxafied with a RadAjaxManager.

Use ItemCreated in I call RegisterPostBackControl so that when I click the PDF button it doesn't use ajax and pops up my PDF.

Protected Sub RadGrid1_ItemCreated(ByVal sender As Object, ByVal e As Telerik.Web.UI.GridItemEventArgs) Handles RadGrid1.ItemCreated
        If TypeOf e.Item Is GridCommandItem Then
            Dim btn As LinkButton = e.Item.FindControl("ExportToPdfButton")
            If Not btn Is Nothing Then
                RadScriptManager.GetCurrent(Page).RegisterPostBackControl(btn)
            End If
        End If
End Sub

This works fine the first time my page loads. I click the PDF, it opens up... all good. 
However, I have a series of combo boxes that are wired in the RadAjaxManager to rebind the grid when changed. When the radgrid gets changed through an ajax postback, and I click the PDF button, it then causes an ajax postback and the commanditem template disappears entirely, and of course.. the PDF is not created.

Any idea how I can make sure the PDF button always does a regular postback?

[Daniel]

Hello Greg,

I suggest that you avoid the RegisterPostBackControl workaround since it won't work in some scenarios. Instead, I recommend that you use the approach depicted in the following link:
Export from ajaxified grid

Regards,
Daniel
the Telerik team

[Greg]

Thanks. However, it now pops the PDF, but still starts the loading panels which show my "Loading..." image... but never complete.

So when I close or cancel the pdf, I can't see my grid anymore and have to refresh the page, or trigger an ajax postback with one of my combo boxes to get it to reappear.

[Greg]

Nevermind... had my radajaxmanager improperly setup...