title: jqgrid search with loadonce
body: <p>i'm having a problem with jqgrid searching. my code works perfectly with add, edit, delete except searching. Once I load it the data shown fine, but if I click find button, it never does anything.
  I have been looking for it everywhere but I can't find what's wrong. If I use <code>loadonce : true</code> then searching works but now having problem with paging and sorting the grid. I wanna make it work perfectly with paging, sorting, and searching.</p>
  
  <p>here's my code.</p>
  
  <pre><code>$("#material_list").jqGrid({
              url:"MY URL",
              editurl:"MY URL",
              mtype:"post",
              caption:"LIST",
              datatype:"json",
              height:"auto",
              jsonReader : { 
                    root: "rows", 
                    page: "page", 
                    total: "total", 
                    records: "records", 
                    repeatitems: true
                },
              rowNum:10,
              rowList:[5,10,15],
              colNames:["PROD_CODE","PROD_NAME","COMP_CODE","UNIT","STANDARD","USEFLAG"],
              colModel:[
                        {name:"PROD_CODE", index:"PROD_CODE", editable:true},
                        {name:"PROD_NAME", index:"PROD_NAME", editable:true},
                        {name:"COMP_CODE", index:"COMP_CODE", editable:true},
                        {name:"UNIT", index:"UNIT", editable:true},
                        {name:"STANDARD", index:"STANDARD", editable:true},
                        {name:"USEFLAG", index:"USEFLAG", editable:true}
                        ],
              pager:"#pager",
              autowidth:true,
              viewrecords:true,
              //loadonce:true,
          });
  
  $("#material_list").jqGrid(
                  "navGrid",
                  "#pager",
                  {search:true, edit:true, add:true, del:true},
                  {closeAfterEdit:true, reloadAfterSubmit:true},
                  {closeAfterAdd:true, reloadAfterSubmit:true},
                  {reloadAfterSubmit:true}
          );
  </code></pre>