KendoGrid MVC Filtering Problem

[INFOLINE BILGI TEKNOLOJILERI]

Hey
I have some problem with Kendo.Grid()
I wanna add filter for some column value then is NULL.
Code here:
x.Ajax().Read(r => r.Action("DataSource", "SRV_Service", new { area = "SRV" }))
.Filter(f => f.Add(s => s.PID).IsEqualTo((Guid?)null))
Datasource when i use null value filter.
https://resimyukle.xyz/resim/KU48JA

MVC Enums for filter operators
    public enum FilterOperator
    {
        IsLessThan = 0,
        IsLessThanOrEqualTo = 1,
        IsEqualTo = 2,
        IsNotEqualTo = 3,
        IsGreaterThanOrEqualTo = 4,
        IsGreaterThan = 5,
        StartsWith = 6,
        EndsWith = 7,
        Contains = 8,
        IsContainedIn = 9,
        DoesNotContain = 10
    }

And your "Operator used in FilterDescriptor" keys has IsNull operator
http://docs.telerik.com/aspnet-mvc/api/Kendo.Mvc/FilterOperator
How can i do append IsNull operator on Kendo.Mvc.FilterDescriptor ?
Please help me

[Stefan]

Hello,

In order to apply the isNull filter operation, the following syntax has to be used:

.Filter(f => f.Add(s => s.PID).IsNull())

I hope this is helpful.

Regards,
Stefan
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[INFOLINE BILGI TEKNOLOJILERI]

Hello Stefan,

I did searched but i didn't. ( IsNull() operator )

Kendo operator enums on pictures.

What can i do to fix it ?

[Stefan]

Hello Hello,

If the operator is missing I can assume that the application is not using the latest version of Kendo UI, as the Null and notNull operators are added later to the Grid filter operators.

I can suggest upgrading to the latest version of Kendo UI to take advantage of all new features and bug fixes.

If the application is using the latest version and the issue still occurs, please provide a runnable example and I will gladly investigate.

Regards,
Stefan
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