jQuery Grid Plugin – jqGrid

I get the below error if i try to render the Treegrid dynamically.

 [System.Diagnostics.DebuggerNonUserCodeAttribute()]

private void @__BuildControlTree(views_dashboard_productsearch_aspx @__ctrl) { 

 [System.Diagnostics.DebuggerNonUserCodeAttribute()]

 private void @__BuildControlTree(views_dashboard_productsearch_aspx @__ctrl) {

I add the below code in my aspx page.

'<%= Html.Trirand().JQTreeView( new JQTreeView{DataUrl = "' + url +'",Height = Unit.Pixel(300),Width = Unit.Pixel(300)}, "treeview");%>';

what am i missing here