Problem using Blazor Grid.LoadData event

[enchev]

You need to set Count also similar to our demo: https://blazor.radzen.com/datagrid-loaddata

<button @onclick=FakeSomeData>Fake data</button>
Data size = @FakeData.Count()
<RadzenGrid TItem=EventSummary
            FilterCaseSensitivity=FilterCaseSensitivity.CaseInsensitive
            AllowPaging=true
            AllowFiltering=true
            PageSize=10
            AllowSorting=true
            LoadData=@LoadSomeData
            Data=@FakeData
            Count="@Count"
            ColumnWidth="200px">
    <Columns>
        <RadzenGridColumn TItem=@EventSummary
                          Property=@nameof(EventSummary.Description)
                          Title="Description" />
        <RadzenGridColumn TItem=@EventSummary
                          Property=@nameof(EventSummary.UtcTime)
                          Title="Date">
            <Template Context="data">
                @String.Format("{0:d}", data.UtcTime)
            </Template>
        </RadzenGridColumn>
    </Columns>
</RadzenGrid>

@code {
    public class EventSummary
    {
        public int Id { get; set; }
        public DateTime UtcTime { get; set; }
        public EnergyType EnergyType { get; set; }
        public string Description { get; set; }
    }

    public enum EnergyType
    {
        Gas = 0,
        Eletricity = 1
    }

    private IEnumerable<EventSummary> FakeData = Array.Empty<EventSummary>();
    int Count;
    private void FakeSomeData()
    {
        FakeData = Enumerable.Range(1, 10)
            .Select(x => new EventSummary
            {
                Id = x,
                Description = "Description #" + x,
                EnergyType = EnergyType.Gas,
                UtcTime = DateTime.UtcNow
            });
        Count = FakeData.Count();
        StateHasChanged();
    }

    private Task LoadSomeData(LoadDataArgs args)
    {
        FakeSomeData();
        return Task.CompletedTask;
    }
}