Treeview is not working in JQGRID in JSON Data

See more:

jQuery

JQGrid

Hi,
I am new to jqgrid treeview. It is not working. I am trying to do with JSON data.

I have already binded basic attributes like parent, isleaf, expanded and loaded as below

{ name: 'level', width: 50, sortable: false, align: 'center', hidden: false },
{ name: 'parent', width: 50, sortable: false, align: 'center', hidden: false },
{ name: 'isLeaf', width: 50, sortable: false, align: 'center', hidden: false },
{ name: 'expanded', width: 50, sortable: false, align: 'center', hidden: false },
{ name: 'loaded', width: 50, sortable: false, align: 'center', hidden: false },

My Grid initialization:

height: 'auto',
hidegrid: false,
height: 140,
loadui: 'enable',
shrinkToFit: true,
autowidth: true,
treeGrid: true,
treeGridModel: 'adjacency',
treedatatype: "local",
ExpandColumn: 'Attribute1',
ExpandColClick: false,