### Bug report
The DropDownTree TagHelper with enabled checkboxes does not submit the selected options when it is bound to a Model property.
### Reproduction of the problem
1. Define a DropDownTree TagHelper as a form editor and and enable its checkboxes.
2. Bind the editor to a Model property (an array of integers).
3. Submit the form and examine the submit request payload. The values of the selected items are missing.
//Model
public class TestFormModelClass
{
public int[] MonthsSelectedIds { get; set; }
}
//View
@model TestFormModelClass
<form method="post">
<kendo-dropdowntree for="MonthsSelectedIds"
check-all="true"
datatextfield="Month"
datavaluefield="Id">
<hierarchical-datasource type="DataSourceTagHelperType.Custom">
<schema>
<hierarchical-model id="id"></hierarchical-model>
</schema>
<transport>
<read url="/api/items" />
</transport>
</hierarchical-datasource>
<checkboxes check-children="false" name="CheckedMonths" enabled="true" />
</kendo-dropdowntree>
<button type="submit">Save</button>
</form>### Expected/desired behavior
When the DropDownTree TagHelper with checkboxes is used as a form editor, the values of the selected items must be submitted as expected to the server.
### Workaround
Use the HtmlHelper version of the DropDownTree
### Environment
* **Telerik UI for ASP.NET Core version: 2024.1.319
* **Browser: [all]
I tried the HtmlHelper version and the selected values ARE reflected in the OnPost method. However, they are not reflected in the DropDownTree form control after the post. (You'll see that the values selected are displayed in an unordered list but not in the control.)
6 Items selected before posting:
Items reflected in bullet list but not in control after posting:
Again, attaching the example.