Last Updated: 27 Jun 2023 16:19 by Greg Decos
Greg Decos
Created on: 27 Jun 2023 16:19
Category: Filter
Type: Bug Report
Filter - Invalid isnull queries for dates

Bug report

When a user creates a filter with a date, it starts as an empty Datepicker, but the value is appearing as an empty string. Thus, if the user clicks apply, an error appears in the console. If you place a value in the DatePicker and clear it, the value will be Null.

Reproduction of the problem

  1. Go to this Progress Telerik ASP.NET Core REPL.
  2. Add filter for a Date but keep the datepicker empty.
  3. Select apply.
  4. Now, add a date and clear the value.

Current behavior

The filter menu sends isnull filter queries in the following format:

While the Filter component sends it as follows:

As a result the ToDataSourceResult method fails.

Expected/desired behavior

If the DatePicker is empty, the filter should properly perform the 'isnull' query upon clicking apply.


  • Kendo UI version: 2023.2.606
  • jQuery version: All Supported Versions
  • Browser: all