RadzenDatagridColumn filter cannot be cleared after setting FilterValue #1504

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claunia · 2026-01-29T17:54:36Z

claunia commented

2026-01-29 17:54:36 +00:00

Originally created by @tmyllymaki on GitHub (Nov 29, 2024).

Describe the bug
I'm setting an initial value on a RadzenDatagridColumn<T>.FilterValue as so:

foreach (var (key, filterValue) in GridFilters)
{
    if (filterValue is null) continue;
    var column = _dataGrid.ColumnsCollection.FirstOrDefault(c => c.Title == key);
    if (column is null) continue;
    column.FilterValue = filterValue;
}
await _dataGrid.Reload();

After setting the FilterValue you can't clear the filter as the GetFilterValue() always fallbacks to the initial FilterValue which is not modified:

public object GetFilterValue()
{
    return filterValue ?? FilterValue;
}

You can circumvent the issue by using the SetFilterValueAsync.

Expected behavior
The FilterValue should update when the component is updated or the property should be modified or removed.

Desktop (please complete the following information):

Version 5.6.9

Originally created by @tmyllymaki on GitHub (Nov 29, 2024).  **Describe the bug** I'm setting an initial value on a `RadzenDatagridColumn<T>.FilterValue` as so: ```csharp foreach (var (key, filterValue) in GridFilters) { if (filterValue is null) continue; var column = _dataGrid.ColumnsCollection.FirstOrDefault(c => c.Title == key); if (column is null) continue; column.FilterValue = filterValue; } await _dataGrid.Reload(); ``` After setting the `FilterValue` you can't clear the filter as the `GetFilterValue()` always fallbacks to the initial `FilterValue` which is not modified: ```csharp public object GetFilterValue() { return filterValue ?? FilterValue; } ``` You can circumvent the issue by using the `SetFilterValueAsync`. **Expected behavior** The `FilterValue` should update when the component is updated or the property should be modified or removed. **Desktop (please complete the following information):** - Version 5.6.9

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Reference: starred/radzen-blazor#1504