RadzenDataGrid ignores sort order when data takes long to load #623

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claunia · 2026-01-29T17:40:24Z

claunia commented

2026-01-29 17:40:24 +00:00

Originally created by @CollinAlpert on GitHub (Nov 8, 2022).

Describe the bug
When specifying a default sort order (e.g. SortOrder.Descending) in a data grid column of a RadzenDataGrid, the data is not sorted accordingly if the data is loaded after the page is rendered.

To Reproduce
Consider this Blazor WASM example:

@page "/"

<RadzenDataGrid Data="People" AllowSorting="true">
    <Columns>
        <RadzenDataGridColumn Property="Name" Title="Name" TItem="Person"/>
        <RadzenDataGridColumn Property="Age" Title="Age" SortOrder="SortOrder.Descending" TItem="Person"/>
    </Columns>
</RadzenDataGrid>

@code {

    public IEnumerable<Person>? People { get; set; }

    protected override async Task OnInitializedAsync()
    {
        await Task.Delay(1_000);
        People = new[]
        {
            new Person("Steve", 21),
            new Person("Peter", 22),
            new Person("Tom", 23)
        };
    }

    public record Person(string Name, int Age);

}

Expected behavior
When the data loads, Tom is the first person in the grid.

Desktop:

OS: macOS
Browser: Firefox 106
Radzen version: 4.2.3

Additional context
If the data is loaded immediately, this problem does not occur.

Originally created by @CollinAlpert on GitHub (Nov 8, 2022).  **Describe the bug** When specifying a default sort order (e.g. `SortOrder.Descending`) in a data grid column of a `RadzenDataGrid`, the data is not sorted accordingly if the data is loaded after the page is rendered. **To Reproduce** Consider this Blazor WASM example: ```razor @page "/" <RadzenDataGrid Data="People" AllowSorting="true"> <Columns> <RadzenDataGridColumn Property="Name" Title="Name" TItem="Person"/> <RadzenDataGridColumn Property="Age" Title="Age" SortOrder="SortOrder.Descending" TItem="Person"/> </Columns> </RadzenDataGrid> @code { public IEnumerable<Person>? People { get; set; } protected override async Task OnInitializedAsync() { await Task.Delay(1_000); People = new[] { new Person("Steve", 21), new Person("Peter", 22), new Person("Tom", 23) }; } public record Person(string Name, int Age); } ``` **Expected behavior** When the data loads, Tom is the first person in the grid. **Desktop:** - OS: macOS - Browser: Firefox 106 - Radzen version: 4.2.3 **Additional context** If the data is loaded immediately, this problem does not occur.

claunia closed this issue

2026-01-29 17:40:25 +00:00

claunia commented

2026-01-29 17:40:25 +00:00

@CollinAlpert commented on GitHub (Nov 9, 2022):

Thanks so much for fixing this so quickly! Is there an approximate ETA for when this fix will be released?

@CollinAlpert commented on GitHub (Nov 9, 2022): Thanks so much for fixing this so quickly! Is there an approximate ETA for when this fix will be released?

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Reference: starred/radzen-blazor#623