将带Infragistics Hierarchical Data Grid的子节点绑定到jsonResult

Question

我有一个分层数据网格，可以从json调用中获取数据。但我对儿童乐队有疑问。我不知道它是代码还是如何在json调用的列表中显示数据。

    <table id="hierarchicalGrid"></table>

     <script type="text/javascript">

    var data = @MyData.AsRawJson()

    $("#hierarchicalGrid").igHierarchicalGrid({  
        dataSource: data,
        odata: true,
        initialDataBindDepth: -1,
        autoGenerateLayouts: true,
        autoGenerateColumns: false,
        primaryKey: "Username",
        columns:
           [{ key: "Username", headerText: "Username", dataType: "string" },
            {key: "EmplID", headerText: "EmplID", dataType: "string" },                
            {key: "Comment", headerText: "Comment", dataType: "string" }],            
        features:
            [{name: 'Paging',
                type: "local",
                pageSize: 50},
            { name: "Resizing"},
            { name: 'ColumnMoving' }],
        columnLayouts: [
                {
                    key: "GroupName",                        
                    primaryKey: "GroupName",
                    foreignKey: "GroupMembers",
                    autoGenerateColumns: false,
                    columns: [
                        { key: "GroupName", headerText: "UserName", dataType: "string", width: "100px" },
                        { key: "GroupDescription", headerText: "GroupDescription", dataType: "string", width: "100px" },
                        { key: "GroupMembers", headerText: "GroupMembers", dataType: "string", width: "100px" }
                    ], 
                    features: [
                        {
                            name: "Sorting",
                            type: "local"
                        }]

                }]
    });

</script>

数据如下

    [username],[EmplID],[comment],[GroupName],[GroupDescription],[GroupMembers] 

UserName，EmplID和Comment以每个用户名重复相同的值，而GroupName和GroupDescription的值继续是唯一的。 GroupMembers与UserName具有相同的数据。所有数据都来自一个视图，它是来自用户（[用户名]，[EmplID]，[评论]）和组（[GroupName]，[GroupDescription]，[GroupMembers]）的连接。我想为UserName，EmplID和Comment创建一行，就好像它是一个groupby，然后扩展子带将显示[GroupName]和[GroupDescription]。

当初始网格打开时，我会重复[username]，[EmplID]，[comment]的行，当我尝试扩展子带时，它会抛出错误消息显示：

    Unable to get value of the property '_injectGrid': object is null or undefined.

为了它的价值，这是使用ServiceStack到Bootstrap在C＃Razor页面上编写的。非常感谢任何和所有帮助。