NullReference Exception when Filter applied

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Coops
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Coops asked on 21 Sep 2022, 12:07 PM | edited on 21 Sep 2022, 12:27 PM

I have a TelerikGrid that I set the filter state using the OnStateInit method. This work fine and the menu item shows up blue to indicate that it is in use, but when I choose that column menu and the Filter option an unhandled exception occurs.

I have produced a demo and been able to reproduce the issue, located here - https://blazorrepl.telerik.com/wcYDwFbw26v6wIqr52

I'm guessing that there is some setup missing, but from reading the documentation, I can't seem to find it.

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Coops
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answered on 21 Sep 2022, 01:31 PM

My team found the solution, I had used the constructor that takes three arguments. In fact an object initialiser is needed that set the 'MemberType' property also. So instead of:

new FilterDescriptor("Flow.FlowType", FilterOperator.Contains, FlowType)


I needed to use:

new FilterDescriptor
{
    Member = "Flow.FlowType",
    Operator = FilterOperator.Contains,
    Value = FlowType,
    MemberType = typeof(string)
}

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supachris28
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answered on 21 Sep 2022, 01:22 PM
The MemberType of the FilterDescriptor needs to be set. The constructor really should be updated to include this.
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