OK, I've read all the posts and proposed solutions without finding a working answer, and many of the examples are from v8.3.

Is there a solid workaround/fix to the issue where setting the ContentURL of a WDW in javascript does not show the contenturl page contents?

aspx:

<

ig:WebDialogWindow ID="editsettingswindow" runat="server"
InitialLocation="Centered" Width="480px" Modal="True" WindowState="Hidden" >
</ig:WebDialogWindow>

code:

var recordid = 1;
var dlg = $find('<%=editsettingswindow.ClientID%>');
var contentPane = dlg.get_contentPane();
contentPane.set_contentUrl("~\\ServiceFinder\\LocationPartSettingEdit.aspx?partid=" + recordId);
dlg.show();

This shows the dialog but it is blank.  The below suggested solution results in an undefined or null error (as other posters have reported as well). 

var

iframe = contentPane.get_element().getElementsByTagName("IFRAME")[0]
iframe.contentWindow.location.href = "~\\ServiceFinder\\LocationPartSettingEdit.aspx?partid=" + recordId

Thanks,

Heather