CartesianChart DateTimePoint bug: When Series have no values, Labeler in Axis throws ArgumentOutOfRangeException

[felinepunch]

Describe the bug
System.ArgumentOutOfRangeException: 'Ticks must be between DateTime.MinValue.Ticks and DateTime.MaxValue.Ticks. Arg_ParamName_Name' is thrown when Series have no value.

The value of Labeler is -2000000000000 and new DateTime((long) value) throws exception.

environment: WinUI 3, Windows 10

public IEnumerable<ICartesianAxis> XAxes { get; set; } = new Axis[]
{
            new Axis
            {
                Labeler = value => new DateTime((long) value).ToString("MMMM dd"),
                LabelsRotation = 15,

                // when using a date time type, let the library know your unit 
                UnitWidth = TimeSpan.FromDays(1).Ticks, 

                // if the difference between our points is in hours then we would:
                // UnitWidth = TimeSpan.FromHours(1).Ticks,

                // since all the months and years have a different number of days
                // we can use the average, it would not cause any visible error in the user interface
                // Months: TimeSpan.FromDays(30.4375).Ticks
                // Years: TimeSpan.FromDays(365.25).Ticks

                // The MinStep property forces the separator to be greater than 1 day.
                MinStep = TimeSpan.FromDays(1).Ticks
            }
};

var series = new ColumnSeries<DateTimePoint>
{
    TooltipLabelFormatter = (chartPoint) => $"{new DateTime((long)chartPoint.SecondaryValue):MMMM dd}: {chartPoint.PrimaryValue}",
    Values = new ObservableCollection<DateTimePoint>
    {
//                    new DateTimePoint(new DateTime(2021, 1, 1), 3),
        // notice we are missing the day new DateTime(2021, 1, 2)
        //new DateTimePoint(new DateTime(2021, 1, 3), 6),
        //new DateTimePoint(new DateTime(2021, 1, 4), 5),
        //new DateTimePoint(new DateTime(2021, 1, 5), 3),
        //new DateTimePoint(new DateTime(2021, 1, 6), 5),
        //new DateTimePoint(new DateTime(2021, 1, 7), 8),
        //new DateTimePoint(new DateTime(2021, 1, 8), 6)
    },
    Fill = null,
};

[ehnajafi]

Try checking to see if value < 0 and if so set date to a default value.

Labeler = value => value >0 ? $"{new DateTime((long)value):MMMM dd}" : $"{DateTime.Now: MMMM dd}";

[beto-rodriguez]

Thanks for the report, this is fixed with the referenced commit and will be included in the next version of the library.

[danielgruethling]

The same exception gets thrown for me when I move the crosshair to the edge of an Axis using DateTimePoint in their Labeler. Also if I try to zoom on the Axis.

System.ArgumentOutOfRangeException: "Ticks must be between DateTime.MinValue.Ticks and DateTime.MaxValue.Ticks. Arg_ParamName_Name"

But only if there are no points in the Series. So I thought I'd try to answer on this issue. I can also open a new issue if needed.

I am using WinUI3, Win10 and beta514

[beto-rodriguez]

The referenced commit fixes that issue @danielgruethling, this fix will be included in the next version of the library, thanks for the report!