RadzenTree OnExpand and async

Radzen Studio Blazor Server
1

Using an async OnExpand callback for populating args.Children doesn't seem to be working. Defining the callback as async works but as soon as I await something, even just a Task.Delay, the children do not get populated in the view.

Example:

public async Task OnExpand(TreeExpandEventArgs args)
{
    await Task.Delay(1000);
    
    args.Children.Data = new List<string> { "Item 1", "Item 2", "Item 3" };
    args.Children.Text = item => (string)item;
    args.Children.HasChildren = item => false;
}

Am I doing something wrong?

2

Hi @Chris,

No, you are not doing anything wrong. The problem is there is a missing await in the Tree implementation. We will address that problem with the next release of the Radzen Blazor Components.

3

Thank you (also for the awesome components). I'm looking forward to the fix.

4

Hi guys, I just post an issue very similar to this when I'm using the "HttpClient.GetStringAsync" call. I saw that there's now a await when calling the Expand callback but still the control return anyway. Any idea?