Sou novato no uso do jqgrid.

Enquanto a nova página carrega a grade, os dados são carregados corretamente do banco de dados. Posteriormente devido a loadonce: true, a grade não está recarregando os dados do banco de dados para adicionar / editar / exclui

combinação de aplicativos @My é JSP, Servlet, MySQL

Tenho uma grade com as seguintes configurações

jQuery("#userList").jqGrid({
                    url: '<%=request.getContextPath()%>/userJqGrid?q=1&action=fetchData&userCookie=<%= encodedCookie%>',
                    datatype: 'xml',
                    mtype: 'GET',
                    colNames:['<%= userProp.getProperty(userColNames[0])%>',
                              '<%= userProp.getProperty(userColNames[1])%>',
                              '<%= userProp.getProperty(userColNames[2])%>',
                              '<%= userProp.getProperty(userColNames[3])%>',
                              '<%= userProp.getProperty(userColNames[4])%>',
                              '<%= userProp.getProperty(userColNames[5])%>'
],
                    colModel:[
                        {name:'<%= userColNames[0]%>',index:'<%= userColNames[0]%>',
                            width:120,sortable:true,editable:true,editrules:{required:true},formoptions:{rowpos:1, elmprefix:'*'}},
                        {name:'<%= userColNames[1]%>',index:'<%= userColNames[1]%>',
                            width:130,sortable:true,editable:true},
                        {name:'<%= userColNames[2]%>',index:'<%= userColNames[2]%>',
                            width:100,sortable:true,editable:true,editrules:{required:true},formoptions:{rowpos:3, elmprefix:'*'}},
                        {name:'<%= userColNames[3]%>',index:'<%= userColNames[3]%>',
                            width:180,sortable:true,editable:true,editrules:{email:true,required:true},formoptions:{rowpos:4, elmprefix:'*'}},
                        {name:'<%= userColNames[4]%>',index:'<%= userColNames[4]%>', 
                            width:100,sortable:true,editable:true},
                        {name:'<%= userColNames[5]%>',index:'<%= userColNames[5]%>', 
                            width:100,sortable:true,editable:true},
                    ],
                    pager: '#pager1',
                    rowNum:50,
                    height:'auto',
                    //rowList:[10,20,30],
                    loadonce: true,
                    sortname:'<%= userColNames[0]%>',
                    viewrecords: true,
                    editurl:'<%=request.getContextPath()%>/userJqGrid?q=1&action=addData&userCookie=<%= encodedCookie%>',
                    caption: 'User Grid',
                    ondblClickRow: function(rowid) {
                       $("#userList").jqGrid('editGridRow',rowid, userEditParam);
                        return;
                    }
                 });
$("#userList").jqGrid('navGrid',"#pager1",{add:true,edit:true,del:true});
$("#userList").jqGrid('gridResize', { minWidth: 450, minHeight: 150});

Tentei adicionar o seguinte código para recarregar

$("#userList").jqGrid('setGridParam',{datatype:xml}).trigger('reloadGrid')

lguém pode ajuda

Solution que funcionou para mim

$("#userList").jqGrid('navGrid',"#pager1",{add:true,edit:true,del:true,refresh:true,

beforeRefresh: function() {
   $("#userList").jqGrid('setGridParam',{datatype:xml}).trigger('reloadGrid');
}},
{
  afterSubmit: processAddEdit,
       closeAfterAdd:true,
       closeAfterEdit:true
},{
  aftersubmit:processAddEdit,
       closeAfterAdd:true,
       closeAfterEdit:true
});

function processAddEdit() {
  $("#userList").jqGrid('setGridParam',{datatype:xml}).trigger('reloadGrid');
  return[true,'']; //no error
}