Refresh data in child datagrid

Radzen Studio Blazor WebAssembly
1

Hi,
I use blazor wasm net core 6.
I have parent RadzenDataGrid where I used EditInLine and this main table is expandable.
I added child table for each Id of the main table.

When I populate in the child table I have to change the page to update the child table. How to update the child table without changing the page?

Thanks in advance

2

Maybe you should check the code generated by some of our Master/Detail CRUD templates for reference.

3

I checked it

I've put OnAfterRenderAsync

 protected override async Task OnAfterRenderAsync(bool firstRender)
    {
        base.OnAfterRender(firstRender);
 
        if (firstRender)
        {
            await grid.ExpandRow(developers.FirstOrDefault());
        }
    }

I obtain this message

blazor.webassembly.js:1  crit: Microsoft.AspNetCore.Components.WebAssembly.Rendering.WebAssemblyRenderer[100]
      Unhandled exception rendering component: Value cannot be null. (Parameter 'source')
System.ArgumentNullException: Value cannot be null. (Parameter 'source')
   at System.Linq.ThrowHelper.ThrowArgumentNullException(ExceptionArgument argument)
   at System.Linq.Enumerable.TryGetFirst[SuiviBE](IEnumerable`1 source, Boolean& found)
   at System.Linq.Enumerable.FirstOrDefault[SuiviBE](IEnumerable`1 source)
   at ServiceDT.Client.Pages.Etude.OnAfterRenderAsync(Boolean firstRender) in C:\App\sbd\ServiceDT - Copie\ServiceDT\Client\Pages\Etude.razor:line 248
4

The error is self explanatory - developers is null. Please use the debugger to troubleshoot such. cases. There isn't anything Radzen related in that stacktrace.

5

Yes I know if not relatd to Radzen. So I wanted to know if you can give me some advise how I can do that

I have this UI and when I want to added the ActionItemId (click in button A in main table that EditInLine) I have to update RadzenHtmlEditor with button update so the window closes and I have to change the page to see the ActionItemId updated.

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