Auto validate RadzenDataFilter input

Radzen.Blazor Components
1

Imagine having a RadzenDataFilter where you selected a property, did not specify a value and observe filter string

<RadzenDataFilter @ref="filter" Auto="false" Style="width: 65%;" TItem="SeriesViewPresetFilter">
    <Properties>
        <RadzenDataFilterProperty Property="Series.Id" Title="Series Id" />
    </Properties>
</RadzenDataFilter>

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    public string? FilterString
    {
        get
        {
            return filter.Filters.IsNullOrEmpty() ? null : filter.ToFilterString();
        }
    }

Result of FilterString: '(Series.Id) = '

This is obviously not a valid dynamic linq expression. Is there a way to automatically validate / exclude descriptors that produce such filter strings?

I have seen this thread: DataFilter - filter is not empty or is required? - #2 by enchev
But to wire up custom validator for each filter for each property is an insane amount of work.

Update: it looks like the issue occurs only with numbers and enums, for strings and dates RadzenDataFilter just omits such descriptors

2

In my opinion we should fix the ToFilterString() in such cases since null is also valid value.

UPDATE: We've decided to match ToFilterString() behavior to Where() extension method:

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