Oxyplot in xamarin not generated

Question

I ran in to an issue in generating oxyplot with dynamic data. This is the first time I'm using oxyplot with dynamic data.

public async Task<PlotModel> AreaChart_NoOfPoliciesAsync()
    {
        var plotModel1 = new PlotModel { Title = "Number of Policies with last year" };

        plotModel1.InvalidatePlot(true);
        try
        {


            var s1 = new AreaSeries()
            {
                Title = "Number of policies in last year",
                Color = OxyColors.LightPink,
                MarkerType = MarkerType.Circle,
                MarkerSize = 6,
                MarkerStroke = OxyColors.White,
                MarkerFill = OxyColors.LightPink,
                MarkerStrokeThickness = 1.5
            };

            string year_str = DateTime.Today.AddYears(-1).ToString("yyyy");
            int running_month = 1;
            string running_month_str;

            List<MonthlyPerformance> last_year = await _apiServices.GetMonthlyPerformance(Settings.AccessToken, Settings.agentCode, year_str);

            last_year = last_year.FindAll(x => x.BUSS_TYPE == "Total");
            last_year.Sort((x, y) => x.Y_MONTH.CompareTo(y.Y_MONTH));


            s1.Points.Add(new DataPoint(0, 0));
    foreach (MonthlyPerformance item in last_year)
            {
        s1.Points.Add(new DataPoint(running_month, item.NO_BUSINESS));
        running_month++;
    }
    plotModel1.Series.Add(s1);

            plotModel1.Axes.Add(new LinearAxis { Position = AxisPosition.Left, IsPanEnabled = false, IsZoomEnabled = false });
            plotModel1.Axes.Add(new LinearAxis { Position = AxisPosition.Bottom, IsPanEnabled = false, IsZoomEnabled = false });

    return plotModel1;}

The plot generated with hard coded values used for demo. But when the function

 List<MonthlyPerformance> last_year = await _apiServices.GetMonthlyPerformance(Settings.AccessToken, Settings.agentCode, year_str);

is called, oxyplot is not being generated. I just get a blank space. I dont get any compilation errors.

I'm using MVVM. Could someone please point out what I'm doing wrong here. Thanks in advance.

How do you use the returned plotModel1? Could it be that a notification about an updated property is missing thus the view won't be refreshed? — tequila slammer, Aug 06 '18 at 14:45

score 0 · Answer 1 · answered Aug 06 '18 at 06:08

0

Once await and async were removed, the chart appeared.

I don't think it's the right way to handled the issue. But I was running out of development time.

answered Aug 06 '18 at 06:08

Anshu

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Oxyplot in xamarin not generated

1 Answers1