AcManager.Controls.ViewModels.RaceGridViewModel.RebuildGridAsyncInner C# (CSharp) Method

        private async Task RebuildGridAsyncInner() {
            try {
                await Task.Delay(50);

                OnPropertyChanged(nameof(IsBusy));
                ErrorMessage = null;

                again:
                var mode = Mode;
                var candidates = await FindCandidates();
                if (mode != Mode) goto again;

                // I’ve seen that XKCD comic, but I still think goto is more 
                // suitable than a loop here

                if (candidates == null) return;
                NonfilteredList.ReplaceEverythingBy(candidates);
            } catch (SyntaxErrorException e) {
                ErrorMessage = string.Format(ToolsStrings.Common_SyntaxErrorFormat, e.Message);
                NonfatalError.Notify(ToolsStrings.RaceGrid_CannotUpdate, e);
            } catch (ScriptRuntimeException e) {
                ErrorMessage = e.Message;
            } catch (InformativeException e) when (e.SolutionCommentary == null) {
                ErrorMessage = e.Message;
            } catch (Exception e) {
                ErrorMessage = e.Message;
                NonfatalError.Notify(ToolsStrings.RaceGrid_CannotUpdate, e);
            } finally {
                _rebuildingTask = null;
                OnPropertyChanged(nameof(IsBusy));
            }
        }