while using the .net version 4 and use RenderingMode attribute for menu,
it gave the error stating :
Error 92 'System.Web.UI.WebControls.Menu' does not contain a definition for 'RenderingMode' and no extension method 'RenderingMode' accepting a first argument of type 'System.Web.UI.WebControls.Menu' could be found (are you missing a using directive or an assembly reference?)
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