先定义：    var SelectRowIndx;

然后加入以下属性：

multiselect: true,onSelectRow: function () {SelectRowIndx = GetJqGridRowIndx("#" + this.id);},gridComplete: function () {$("#" + this.id).jqGrid('setSelection', SelectRowIndx);}

举例：

<script type="text/javascript">$(function() {GetGrid();})//加载表格functionGetGrid() {varSelectRowIndx;$("#gridTable").jqGrid({url:"@Url.Content("~/School/ClassInfoes/GridPageListJson")",datatype: "json",height: $(window).height()- 149,autowidth:true,colModel: [{ label:'Id', name: 'id', index: 'id', width: 0, align: 'left', sortable: true, hidden: true},{ label:'所属学校', name: 'schoolname', index: 'schoolname', width: 120, align: 'center', sortable: true},{ label:'班级编码', name: 'classcode', index: 'classcode', width: 70, align: 'center', sortable: true},{ label:'院系部', name: 'departname', index: 'departname', width: 50, align: 'center', sortable: true},{ label:'入学年份', name: 'enteryear', index: 'enteryear', width: 50, align: 'center', sortable: true},{ label:'毕业年份', name: 'graduateyear', index: 'graduateyear', width: 50, align: 'center', sortable: true},{ label:'当前所在年级', name: 'currentgradename', index: 'currentgradename', width: 50, align: 'center', sortable: true},{ label:'当前所属班级', name: 'currentclassname', index: 'currentclassname', width: 50, align: 'center', sortable: true},{ label:'班级教室', name: 'classroom', index: 'classroom', width: 50, align: 'center', sortable: true},{ label:'毕业年级', name: 'graduategradename', index: 'graduategradename', width: 50, align: 'center', sortable: true},{ label:'班主任', name: 'classteachername', index: 'classteachername', width: 50, align: 'center', sortable: true},{ label:'班长', name: 'monitername', index: 'monitername', width: 50, align: 'center', sortable: true},{label:'是否毕业', name: 'flaggraduate', index: 'flaggraduate', width: 50, align: 'center', sortable: true,formatter:function(cellvalue, options, rowObject) {if (cellvalue == true) return "<font color='red'>是</font>";if (cellvalue == false) return "<font color='green'>否</font>";}},{label:'创建日期', name: 'createdate', index: 'createdate', width: 100, align: 'center', sortable: true,formatter:function(cellvalue, options, rowObject) {return formatDate(cellvalue, 'yyyy-MM-dd');}},{ label:'创建者', name: 'createusername', index: 'createusername', width: 50, align: 'center', sortable: true},{label:'修改日期', name: 'modifydate', index: 'modifydate', width: 100, align: 'center', sortable: true,formatter:function(cellvalue, options, rowObject) {return formatDate(cellvalue, 'yyyy-MM-dd');}},{ label:'修改者', name: 'modifyusername', index: 'modifyusername', width: 50, align: 'center', sortable: true},{label:'学生列表', name: 'id', index: 'id', width: 80, align: "center", sortable: false,formatter:function(cellvalue, options, rowObject) {var id = rowObject['id']return "<button οnclick=\"AddTabMenu('530b9428-25d9-4166-9dc2-ea994b90cdd6', '/School/Students/StudentsList?id=" + id + "', '学生管理', 'group.png','true',true)\"> 点击我</button>";}},],pager:"#gridPager",sortname:'classcode',sortorder:'asc',rownumbers:true,shrinkToFit:false,gridview:true,multiselect:true,onSelectRow:function() {SelectRowIndx= GetJqGridRowIndx("#" + this.id);},gridComplete:function() {$("#" + this.id).jqGrid('setSelection', SelectRowIndx);}});
}//新增functionbtn_add() {var url = "/School/ClassInfoes/Form";openDialog(url,"Form", "新增班级数据表", 770, 395, function(iframe) {top.frames[iframe].AcceptClick();});}//编辑functionbtn_edit() {var KeyValue = GetJqGridRowValue("#gridTable", "id");if(IsChecked(KeyValue)) {var url = "/School/ClassInfoes/Form?KeyValue=" +KeyValue;openDialog(url,"Form", "编辑班级数据表", 770, 395, function(iframe) {top.frames[iframe].AcceptClick();});}}//批量添加班级functionbtn_autoadd() {var url = "/School/ClassInfoes/AutoAddClassInfoes";openDialog(url,"AutoAddClassInfo", "批量添加班级", 770, 395, function(iframe) {top.frames[iframe].AcceptClick();});}//删除functionbtn_delete() {var KeyValue = GetJqGridRowValue("#gridTable", "id");if(IsDelData(KeyValue)) {var delparm = 'KeyValue=' +KeyValue;delConfig('/School/ClassInfoes/DeleteClassInfoes', delparm, KeyValue.split(",").length);}}//明细functionbtn_detail() {var KeyValue = GetJqGridRowValue("#gridTable", "id");if(IsChecked(KeyValue)) {var url = "/School/ClassInfoes/Detail?KeyValue=" +KeyValue;Dialog(url,"Detail", "班级数据表明细", 820, 500, function(iframe) {top.frames[iframe].AcceptClick();});}}//刷新functionwindowload() {$("#gridTable").trigger("reloadGrid"); //重新载入
}</script>