Code

var json = new MindFusion.Json.Wpf.JsonObject();
app.SaveTo(json, context);
var serializer = new MindFusion.Json.Wpf.Serializer();
var jsonString = context.Serialize(json);
Debug.WriteLine(jsonString);

var parser = new MindFusion.Json.Wpf.Parser();
json = parser.ReadJsonObject(jsonString, context);
app.LoadFrom(json, context); 

Code

foreach (Button button in toolbar.Items)
{
	button.Foreground = Brushes.Orange;
	button.Style = null;
} 

Code

var systemCalednar = Thread.CurrentThread.CurrentCulture.Calendar;
var endDate = recurrence.GetEndDate(systemCalednar);
if (endDate == DateTime.MaxValue)
{
	Debug.WriteLine("it never ends");
}
else
{
	// make sure past midnight
	endDate = endDate.AddDays(1);

	var instances = recurrence.GenerateItems(
		recurrence.StartDate, endDate);
	Debug.WriteLine(instances.Last()?.EndTime);
} 

Code

void OnCellPresenterCreated(object sender, CellPresenterEventArgs e)
{
    if (e.CellPresenter.StartTime.Date == DateTime.Now.AddDays(1).Date)
    {
        var headerStyle = new CalendarStyle();
        headerStyle.FontWeight = FontWeights.Bold;
        headerStyle.Foreground = Brushes.Red;
        e.CellPresenter.SetValue(
            CellPresenter.CellHeaderStyleProperty, headerStyle);
    }
}