title: JqGrid: how to refresh the grid in afterSubmit?
body: <p>I have two buttons in the pager, one for adding a new record. See the code below:</p>
  
  <pre><code>$(grid_selector).jqGrid('navGrid', pager_selector, 
      {   
          edit: false,
          add: true,
          addicon : 'icon-plus-sign purple',
          del: true,
          delicon : 'icon-trash red',
          search: false,
          refresh: false,
          view: false,
      },
      null, //no need for edit
      {
          //new record form
          url: "/add",  
          ...
          afterSubmit : function(response, postdata)  {
  
              // ??? how to refresh the grid
  
          }
      },
      ...
  
  }
  </code></pre>
  
  <p>After adding a record, I am hoping to refresh the grid. Could someone let me know how to do this? </p>
  
  <p>I am using local data for the test purpose.</p>
  
  <p>Regards.</p>