DataGridRow closes with async RowExpand callback #650

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claunia · 2026-01-29T17:40:56Z

claunia commented

2026-01-29 17:40:56 +00:00

Originally created by @buehler on GitHub (Nov 28, 2022).

Describe the bug
After expending a radzen grid row with an async RowExpand callback, the row immediately closes again.

To Reproduce
Steps to reproduce the behavior:

Create a RadzenGrid analog to the example in https://blazor.radzen.com/master-detail-hierarchy-demand
Make the RowExpand callback async and make two awaited calls in it
Expand the row in the UI
The row will open and immediately close again

Expected behavior
It would be nice to have the row to stay open.

Screenshots
If applicable, add screenshots to help explain your problem.

Desktop (please complete the following information):

OS: Windows 11
Browser: newest Chrome

Additional context
I also tried with "StateHasChanged" at the end of the async method. Sadly, it just closes.

Originally created by @buehler on GitHub (Nov 28, 2022). **Describe the bug** After expending a radzen grid row with an async RowExpand callback, the row immediately closes again. **To Reproduce** Steps to reproduce the behavior: 1. Create a RadzenGrid analog to the example in https://blazor.radzen.com/master-detail-hierarchy-demand 2. Make the RowExpand callback async and make two awaited calls in it 3. Expand the row in the UI 4. The row will open and immediately close again **Expected behavior** It would be nice to have the row to stay open. **Screenshots** If applicable, add screenshots to help explain your problem. **Desktop (please complete the following information):** - OS: Windows 11 - Browser: newest Chrome **Additional context** I also tried with "StateHasChanged" at the end of the async method. Sadly, it just closes.

claunia closed this issue

2026-01-29 17:40:57 +00:00

claunia commented

2026-01-29 17:40:57 +00:00

@buehler commented on GitHub (Nov 28, 2022):

I have an addition: When the object reference does not change, the row does not close. So using myObject.Prop ??= ... results in a closing row.

@buehler commented on GitHub (Nov 28, 2022): I have an addition: When the object reference does not change, the row does not close. So using `myObject.Prop ??= ...` results in a closing row.

claunia commented

2026-01-29 17:40:58 +00:00

@buehler commented on GitHub (Nov 28, 2022):

When using the same object, it works:

private async Task RowExpand(User user)
{
    user.Details.Roles = (await RoleService.GetUserRoles(user.Id)).ToList();
    user.Details.Redemptions = await Tokens.GetRedeemedUserTokens(user.Id);
}

Should this stay open, i.e. is it still a bug?

@buehler commented on GitHub (Nov 28, 2022): When using the same object, it works: ```csharp private async Task RowExpand(User user) { user.Details.Roles = (await RoleService.GetUserRoles(user.Id)).ToList(); user.Details.Redemptions = await Tokens.GetRedeemedUserTokens(user.Id); } ``` Should this stay open, i.e. is it still a bug?

claunia commented

2026-01-29 17:40:58 +00:00

@enchev commented on GitHub (Nov 28, 2022):

Hi @buehler,

Unfortunately no row state can be preserved if the data item is different every time.

@enchev commented on GitHub (Nov 28, 2022): Hi @buehler, Unfortunately no row state can be preserved if the data item is different every time.

claunia commented

2026-01-29 17:40:58 +00:00

@buehler commented on GitHub (Nov 28, 2022):

Got it, thank you :-)

@buehler commented on GitHub (Nov 28, 2022): Got it, thank you :-)

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Reference: starred/radzen-blazor#650