GridHeaderComponent is null when I press apply button on a custom filter about grid.blazor

[AlexeyBoyko]

By the way, I've made a comparison of the code introduced by this commit (65b0caa) which meant to fix the #87 issue and it seems that the current state of respective code isn't much different, except for the the variable _sequence which was eliminated since and replaced with explicit numbers. So, if it is broken then it must be for some other reason... so I wonder what could it be?

[AlexeyBoyko]

P.S. Just in case, my app is server-side Blazor, while in the original issue it was probably client side WASM (judging by the link to documentation provided in the question).

[gustavnavar]

I've tested some examples with custom filters in a server-side Blazor project. But they work fine.

By the way there is published sample here. The Customer column uses a custom filter with no errors.

Could you send a sample project including a grid that produces the error?

[AlexeyBoyko]

Thank you for the answer. I attach page's razor and cs files and the filter widget component.
dropDownFilter.zip. If the reason for the bug is not clear from these sources, I can make a separate sample project, just let me know.

[gustavnavar]

You are using UserGroup as generic type parameter of the DropdownFilter class in the page Users.razor.cs:

_customFilters.Add(filterWidgetName, typeof(DropdownFilter<UserGroup>));

You must use UserViewModel as generic type parameter:

 _customFilters.Add(filterWidgetName, typeof(DropdownFilter<UserViewModel>));

[gustavnavar]

By the way, I recommend using a new database context and a new repository for the GridCoreServer constructor for Server Blazor projects, mainly for CRUD support.

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[AlexeyBoyko]

Thank you kindly, it works!