protected override async Task OnAfterRenderAsync(bool firstRender) { if (firstRender) { _touchStartId = await DomService.AddEventListener(_swipeArea, _dotnet, "touchstart", nameof(OnTouchStart), true); _touchEndId = await DomService.AddEventListener(_swipeArea, _dotnet, "touchend", nameof(OnTouchEnd), true); _touchCancelId = await DomService.AddEventListener(_swipeArea, _dotnet, "touchcancel", nameof(OnTouchCancel), true); } await base.OnAfterRenderAsync(firstRender); }