// 初始化DataGrid对象
    $('#dataGrid').dataGrid({
        searchForm: $("#searchForm"),
        showCheckbox: true,
        columnModel: [
            {header:'${text("主键")}', name:'id', index:'a.id', width:150, align:"center",hidden:true},
            //code作为回调页面保存使用,value仅作为回调页面的展示使用
            {header:'${text("拍摄类型code")}', name:'categoryShoot', index:'a.category_shoot', width:150, align:"center",hidden:true},
            {header:'${text("拍摄类型")}', name:'categoryShootName', index:'a.category_shoot', width:150, align:"center"},

            {header:'${text("分类code")}', name:'categorySuite', index:'a.category_suite', width:150, align:"center",hidden:true},
            {header:'${text("分类")}', name:'categorySuiteName', index:'a.category_suite', width:150, align:"center"},

            {header:'${text("拍摄产品code")}', name:'categoryProduct', index:'a.category_product', width:150, align:"center",hidden:true},
            {header:'${text("拍摄产品")}', name:'categoryProductName', index:'a.category_product', width:150, align:"center"},

            {header:'${text("拍摄效果code")}', name:'categoryEffect', index:'a.category_effect', width:150, align:"center",hidden:true},
            {header:'${text("拍摄效果")}', name:'categoryEffectName', index:'a.category_effect', width:150, align:"center"},

            {header:'${text("单价(件/套)")}', name:'price', index:'a.price',width:100, align:"right", formatter:'integer', formatoptions:{
                thousandsSeparator:',', defaulValue:''
            }}
        ],
        //每一行的选中事件
        onSelectRow: function (id, isSelect, event) {
            addOneGridSelect(id, isSelect);
         },
        //选择所有行
        onSelectAll:function(rowIds, isSelect){
            addAllGridSelect(rowIds, isSelect);
        },
        //表格加载完后事件
        gridComplete:function(){
            dataGridSelection();
        },
        // 加载成功后执行事件
        ajaxSuccess: function(data){

        }
    });

再添加以下三个方法

//表格加载完之后,根据全局数组ids,设置需要选中的列
function dataGridSelection() {
    if (!ids) {      
        return false;    
    }    
    var dataGridRows = $('#dataGrid').jqGrid('getRowData');   
    //找到相同的id列,设置其为选中状态 
    for (var i = 0; i < dataGridRows.length; i++) {      
        for (var j = 0; j < ids.length; j++) {        
            if (dataGridRows[i].id == ids[j]) {        
                $("#dataGrid").setSelection(dataGridRows[i].id)        
            }      
        }    
    }

}

//将选中行的ID都加到数组  ids，
function addOneGridSelect(id, isSelect) {
    if (isSelect) {
        if (ids.indexOf(id) == -1) {      
            ids.push(id);    
        } 
    } else {
        var indexTmp = ids.indexOf(id);    
        if (indexTmp != -1) {      
            for (var i = 0; i < ids.length; i++) {        
                if (ids[i] == id) {          
                    ids.splice(i, 1);        
                }      
            }    
        }
    }  
}
   
function addAllGridSelect(rowIds, isSelect) {    
    debugger;
    if (isSelect) {    
        for (var i = 0; i < rowIds.length; i++) {      
            if (ids.indexOf(rowIds[i]) == -1) {        
                ids.push(rowIds[i]);      
            }    
        }    
    } else {    
        for (var i = 0; i < rowIds.length; i++) {      
            var indexTmp = ids.indexOf(rowIds[i]);      
            if (indexTmp != -1) {        
                for (var j = 0; j < ids.length; j++) {          
                    if (ids[j] == rowIds[i]) {            
                        ids.splice(j, 1);          
                    }        
                }      
            }    
        }    
    }  
}