Hi,
if chips added at runtime within OnInitializedAsync() and an awaited async call performs within the methodblock an execption is trown:
NullReferenceException: Object reference not set to an instance of an object.
Syncfusion.EJ2.Blazor.Buttons.ChipListComponent.initGenerate(int i, ChipListChip Chip)
html:
@foreach(ChipCollection currentData in ChipData){
}
c#:
protected override async Task OnInitializedAsync ()
{
await base.OnInitializedAsync();
await Task.Delay( 2500 ); // comment out to get it to work, comment in to force an excpetion
ChipData.Add(new ChipCollection
{
text = "Jenifer",
enabled = true
});
}
Examplecode:
- load this by syncfusion provided code example from this thread (https://www.syncfusion.com/forums/149053/bind-chips-to-listlttgt, BlazorApp1-422972851.zip)
- update Syncfusion.EJ2.Blazor nuget to current version 17.04.42
- replace c#-code within index.razor with this code. html is untouched
After ommenting out 'await Task.Delay( 2500 );' it will run, comment in and the exception is thrown. Of course any other awaited async code like getting json data results in the same exception. The exception is not thrown immediately, but when the method has returned.
Please help me with this problem and also give me a link to the documentation where this behaviour is described and which particular rules apply when using Syncfusion controls from OnInitializedAsync. I'm sure it's written somewhere, but I haven't found it yet...
One more request: it would surely be better to write the sample code with asynchronous method calls (OnInitializedAsync) anyway, since asynchronous processing is preferable.
Anyway, thanks a lot for the support.
Axel.
