combogrid change check multiple

this.SetDict = function (obj, dicType, multiple, Ischeckbox, callback, change) {
obj.combogrid({
panelWidth: 250,
idField: 'Code',
textField: 'Name',
url: '/Common/EntityJsonList.ashx?_method=dict&dictType=' + dicType + "&tmp=" + Math.random() + '&queryTextFild=Name',
method: 'get',
delay: 1000,
columns: [[
{ field: 'Name', title: '名称', width: 100 },
{ field: 'Code', title: '编码', width: 100 }
]],
striped: true,
editable: true,
collapsible: false, //是否可折叠的
fit: true, //自动大小
keyHandler: {
up: function () { //【向上键】押下处理
//取得选中行
var selected = obj.combogrid('grid').datagrid('getSelected');
if (selected) {
//取得选中行的rowIndex
var index = obj.combogrid('grid').datagrid('getRowIndex', selected);
//向上移动到第一行为止
if (index > 0) {
obj.combogrid('grid').datagrid('selectRow', index - 1);
}
} else {
var rows = obj.combogrid('grid').datagrid('getRows');
obj.combogrid('grid').datagrid('selectRow', rows.length - 1);
}
},
down: function () { //【向下键】押下处理
//取得选中行
var selected = obj.combogrid('grid').datagrid('getSelected');
if (selected) {
//取得选中行的rowIndex
var index = obj.combogrid('grid').datagrid('getRowIndex', selected);
//向下移动到当页最后一行为止
if (index < obj.combogrid('grid').datagrid('getData').rows.length - 1) {
obj.combogrid('grid').datagrid('selectRow', index + 1);
}
} else {
obj.combogrid('grid').datagrid('selectRow', 0);
}
},
enter: function () { //【回车键】押下处理
obj.combogrid('hidePanel');
},
query: function (keyword) { //【动态搜索】处理
//设置查询参数
var queryParams = obj.combogrid("grid").datagrid('options').queryParams;
queryParams.keyword = keyword;
obj.combogrid("grid").datagrid('options').queryParams = queryParams;
//重新加载
obj.combogrid("grid").datagrid("reload");

obj.combogrid("setValue", keyword);
}
},
mode: 'remote',
fitColumns: true,
multiple: multiple,
checkbox: Ischeckbox,
onLoadSuccess: function () {
if (callback) {
callback();
}
},
onChange: function (value, index, data) {
if (change) {
change(value, index, data);
}
}
});
}