jqwidgets-framework/demos/Angular/src/treegrid/columnshierarchy/app.component.html

jQWidgets is an advanced Angular, Vue, Blazor, React, Web Components, jquery, ASP .NET MVC, Custom Elements and HTML5 UI framework.

<jqxTreeGrid 
             [source]="dataAdapter"
             [altRows]="true"
             [columnsResize]="true"
             [columns]="columns"
             [columnGroups]="columnGroups"
             [ready]="ready"
             #TreeGrid>
</jqxTreeGrid>