Jqgrid Tree View Adjacencey

I am using Jqgrid Tree View model in ma application and what i can see is that it shows error as object or property is not supported i have included grid.Treeview.js and other Jqgrid script file. I dont know what can be the issue. And when i checked the sample application in net for adjacency tree view and i tried the same thing but in asp.net with local data which i did not get. Can any one help me how to do the same. Thanks in advance

This is the sample code that im using and more over i dont whether will it work or not.

var myTreeGrid = new Ext.us.tree.TreeGrid({
    columns: columnsConfig,
    rootVisible: false,
    root: rootNode,
    loader: new Ext.ux.tree.TreeGridLoader({preloadChildren: true})
});
var rootNode = $('#treegridsamp').jqgrid({
    treeGrid: true,
    treeGridModel: 'adjacecncy',
    ExpandColumn: 'name',
    datatype: "local",
    mtype: 'Get',
    colNames: ['id','Name','MenuId','Menu Name'],
    colModel: [
        {name:'RowId',index:'RowId',width:300,fixed:true},
        {name:'Name',index:'Name',width:300,fixed:true},
        {name:'MenuId',index:'MenuId',width:300,fixed:true},
        {name:'MenuName',index:'MenuName',width:300,fixed:true},
    ],
    root:[
        {id:"1",Name:"Main Menu", MenuId:"1",MenuName:"Menu1"},
        {id:"2",Name:"Main Menu1",MenuId:"2",MenuName:"Menu2"},
        {id:"3",Name:"Main Menu2",MenuId:"3",MenuName:"Menu3"}
    ],
    pager: '#dvtreegridsamp',
    Caption: 'Sample Tree View Model'
})
$("#treegridsamp").jqGrid('navGrid', '#dvtreegridsamp',
    { edit: false, add: false, del: false, search: false, refresh: false });
var mydata=[
    {id:"1",    Name:"Main Menu",   MenuId:"1",MenuName:"Menu1"},
    {id:"2",    Name:"Main Menu1",  MenuId:"2",MenuName:"Menu2"},
    {id:"3",    Name:"Main Menu2",  MenuId:"3",MenuName:"Menu3"},
    {id:"1.1",  Name:"Sub Menu",    MenuId:"1",MenuName:"Menu1"},
    {id:"1.2",  Name:"Sub Menu1",   MenuId:"1",MenuName:"Menu1"},
    {id:"1.1.1",Name:"Sub Sub Menu",MenuId:"1",MenuName:"Menu1"},
    {id:"2.1",  Name:"Main Menu",   MenuId:"2",MenuName:"Menu2"},
    {id:"2.2",  Name:"Main Menu",   MenuId:"2",MenuName:"Menu2"},
    {id:"3.1",  Name:"Main Menu",   MenuId:"3",MenuName:"Menu3"},
    {id:"3.2",  Name:"Main Menu",   MenuId:"3",MenuName:"Menu3"},
];
for(var i=0;i<mydata.length;i++) {
    $("#treegridsamp").jqGrid('addRowData',i+1,mydata[i]);
}

You code small simple errors, but the main problem which you have is that your code are made to add simple rows and not tree nodes. You can go on the official demo page and choose under "New in version 3.4" the demo "Tree Grid Adjacency model".

I wrote the demo which work exactly like the demo from the demo from the trirand demo page, but use only local data:

In you case you have to extend the objects from mydata with the properties level, parent, isLeaf, expanded:

var mydata = [
    {id:"1",Name:"Main Menu",MenuId:"1",MenuName:"Menu1",
     level:"0", parent:"", isLeaf:false, expanded:false},
    {id:"1_1",Name:"Sub Menu",MenuId:"1",MenuName:"Menu1",
     level:"1", parent:"1", isLeaf:false, expanded:false},
    {id:"1_1_1",Name:"Sub Sub Menu",MenuId:"1",MenuName:"Menu1",
     level:"2", parent:"1_1", isLeaf:true, expanded:false},
    {id:"1_2",Name:"Sub Menu1",MenuId:"1",MenuName:"Menu1",
     level:"1", parent:"1", isLeaf:true, expanded:false},
    {id:"2",Name:"Main Menu1",MenuId:"2",MenuName:"Menu2",
     level:"0", parent:"", isLeaf:false, expanded:true},
    {id:"2_1",Name:"Main Menu",MenuId:"2",MenuName:"Menu2",
     level:"1", parent:"2", isLeaf:true, expanded:false},
    {id:"2_2",Name:"Main Menu",MenuId:"2",MenuName:"Menu2",
     level:"1", parent:"2", isLeaf:true, expanded:false},
    {id:"3",Name:"Main Menu2",MenuId:"3",MenuName:"Menu3",
     level:"0", parent:"", isLeaf:false, expanded:false},
    {id:"3_1",Name:"Main Menu",MenuId:"3",MenuName:"Menu3",
     level:"1", parent:"3", isLeaf:true, expanded:false},
    {id:"3_2",Name:"Main Menu",MenuId:"3",MenuName:"Menu3",
     level:"1", parent:"3", isLeaf:true, expanded:false}
];

Here I modified a little id values, because points should not used in ids. Additionally I set the expanded status of the "Main Menu1" to true to demonstrate only that you can expanded some nodes automatically immediately after the loading.

I modified the jqGrid definition to the following

$("#treegridsamp").jqGrid({
    datatype: "local",
    data: mydata, // will not used at the loading,
                  // but during expanding/collapsing the nodes
    colNames:['id','Name','MenuId','Menu Name'],
    colModel:[
        {name:'id',index:'id',width:100,hidden:true},
        {name:'Name',index:'Name',width:150},
        {name:'MenuId',index:'MenuId',width:100},
        {name:'MenuName',index:'MenuName',width:100}
    ],
    height:'auto',
    //pager : "#ptreegrid",
    sortname: 'id',
    treeGrid: true,
    treeGridModel: 'adjacency',
    treedatatype: "local",
    ExpandColumn: 'Name',
    caption: "Sample Tree View Model"
});

I made the 'id' column hidden and reduced the grid size. To add the data I used addJSONData method because it will set the tree nodes

$("#treegridsamp")[0].addJSONData({
    total: 1,
    page: 1,
    records: mydata.length,
    rows: mydata
});

As the result you will receive

You can see the demo live here.

UPDATED: If you use jqGrid version 4.0 or higher it is important to set loaded:true property for the tree nodes if you want have expanded. For example in the above example the "Main Menu1" item is a node (isLeaf:false) which should be display expanded (expanded:true), so one should add loaded:true for the item definition:

{id:"2", Name:"Main Menu1", MenuId:"2", MenuName:"Menu2",
 level:"0", parent:"", isLeaf:false, expanded:true, loaded:true}

For more examples see here, here, here and here.

UPDATED 2: To have sorting work correctly one have to use parent:null or parent:"null" instead of parent:"" see here for more details.