I tried multiple times with many different ways to get data to be read by TreeList. While searching around I stumbled discovered that people are using ToTreeDataSourceResult extension before sending the data as Json. What is in that extension and where can I get it ?
Trivial examples that should work, but does not:
public ActionResult GetServiceList([DataSourceRequest] DataSourceRequest request, ServiceViewModel viewModel)
{
List<TestViewModel> result = new List<TestViewModel>()
{
new TestViewModel()
{
Id = 1,
ParentId = null,
Name = "Parent"
},
new TestViewModel()
{
Id = 2,
ParentId = 1,
Name = "Child"
}
};
return Json(result, JsonRequestBehavior.AllowGet);
}
And in CSHTML:
@(Html.Kendo().TreeList<IMIS.FrontEnd.Areas.Policy.Models.TestViewModel>()
.Name("treelist")
.Columns(columns =>
{
columns.Add().Field(e => e.Name);
})
.Filterable()
.Sortable()
.DataSource(dataSource => dataSource
.Read(read => read.Action("GetServiceList", "Health", new {Area="Policy"}))
.ServerOperation(false)
.Model(m =>
{
m.Id(f => f.Id);
m.ParentId(f => f.ParentId).DefaultValue(null);
m.Expanded(true);
m.Field(f => f.Name);
}) ).Height(540))
This example should make trivial Tree list, but it does nothing even though the Json data is passed. Is it because I am not using that extension ?