Grid panel header was not displaying

[sundarsureshin]

RCN, i have posted it fully on #5 only thing i missed out is the json result function, by default on page load i dont see header for that gridpanel.

var BindDestination= function (EMP_CODE) {

        $.ajax({
            url: '@Url.Action("Bind_Destination", "Setup")',
               type: 'post',
               data: { EMP_CODE: EMP_CODE },
               success: function (data) {
                   var grid = Ext.getCmp("GPDesignation");
                   grid.getStore().loadData(data);
               }
           });
       };