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<script type="text/javascript">
    $(document).ready(function () {
        $("#cnvxml").click(function () {
             $("#xmlist1").jqGrid('jqGridImport', { impurl: "testxml.xml",
            
             importComplete: function () { extendGrid(); } });

           $(this).hide();
            
            });
    });

function extendGrid() {

    $("#xmlist1").jqGrid('navGrid', "#xmlpager1", { edit: true, del: true });
}