asp.net mvc - Why is this initial Kendo grid filter not working? -

asp.net mvc - Why is this initial Kendo grid filter not working? -

i have model so:

id type ------------- 1 vehicle 2 trailer 3 vehicle

i hoping utilize radio button command how info filtered on kendo grid, choosing filter on whether type equals vehicle or trailer. don't know how that, but, now, can't initial filter work. grid follows:

@(html.kendo().grid<pckendoui.models.companyduedatesindexvm>() .name("duedates") .columns(columns => { columns.bound(c => c.id); columns.bound(c => c.type); }) .filterable() .datasource(ds => ds .ajax() .model(m => m.id(x => x.id)) .read(s => s.action("test", "companyduedates")) .filter(filter => { filter.add(f => f.type == "vehicle"); }) ) )

my code based on filter illustration documentation.

this still displays 3 records in model, rather rows 1 , 3. interesting after specifying initial filter, filter controls not allow filter. is, visible, can type in info , click filter, not filter grid.

does have thought problem be?

according documentation syntax not correct, wrote:

filter.add(f => f.type == "vehicle");

when should be:

filter.add(f => f.type).isequalto("vehicle");

asp.net-mvc filter kendo-ui telerik kendo-grid