时间：2019-05-16 标签：c#windowsapplicationLiveChartsxaxisdateforma

Question

Hello everyone i working in project that convert data (date and value) to graphic curve . i have problem with x axis the value of date printing in double format , i want this values showing like this format 14:12:35

var gradientBrush = new LinearGradientBrush
                 {
                     StartPoint = new System.Windows.Point(0, 0),
                     EndPoint = new System.Windows.Point(0, 1)
                 };
                 gradientBrush.GradientStops.Add(new GradientStop(System.Windows.Media.Color.FromRgb(33, 148, 241), 0.2));
                 gradientBrush.GradientStops.Add(new GradientStop(Colors.Transparent, 1));


                 cartesianChart1.Series.Add(new LineSeries
                 {
                     Values = GetData(),
                     Fill = gradientBrush,
                     StrokeThickness = 0.9,
                     PointGeometry = null
                 });



        cartesianChart1.Zoom = ZoomingOptions.X; 




private ChartValues<DateTimePoint> GetData()
        {

            var values = new ChartValues<DateTimePoint>();

            for (var i = 0; i <lsTemp.Count(); i++)
            {

             // System.DateTime.Today.AddDays(i)
                values.Add(new DateTimePoint(lsDataTime[i], lsTemp[i]));
            }

            return values;
        }

enter image description here

Answer 1

you need to set LabelFormatter property of Axis class. Something like this:

 AxisX = new Axis
            {
                Title = "Date",
                Separator = new Separator { IsEnabled = false,Step = 1 },
                LabelsRotation = -90,
                Foreground = new SolidColorBrush(Colors.Black),
                LabelFormatter = value =>  new System.DateTime((long)value).ToString("t")

        };

And look at this link for formats ToString data formats