1. 獲取指定行的資料  var row = $('#div').datagrid('getData').rows[index];

2. 展示行的詳細資訊（這個是從網上找的原文地址百里馬部落格）

$(function () {
            $('#<span style="color:#ff0000;">div</span>').datagrid({
                view: detailview,
                detailFormatter: function (index, row) {
                    return '<div style="padding:4px"><table class="ddv"></table></div>';
                },
                onExpandRow: function (index, row) {
                    var ddv = $(this).datagrid('getRowDetail', index).find('table.ddv');
                    ddv.datagrid({
                        url: '/Car_Manage/miniData.ashx?Method=getData&value=3&flag=dri',
                        fitColumns: true,
                        singleSelect: true,
                        rownumbers: true,
                        loadMsg: '',
                        height: 'auto',
                        fitColumns: true,
                        columns: [[
                          { field: '欄位', title: '欄位說明', width: 100,align:'center' },
                        ]],
                        onResize: function () {
                            $('#<span style="color:#ff0000;">div</span>').datagrid('fixDetailRowHeight', index);
                        },
                        onLoadSuccess: function () {
                            setTimeout(function () {
                                $('#<span style="color:#ff0000;">div</span>').datagrid('fixDetailRowHeight', index);
                            }, 0);
                        }
                    });
                    $('#<span style="color:#ff0000;">div</span>').datagrid('fixDetailRowHeight', index);
                }
            });
        });