具有动态 Michrochart-NugetPackage 的 MVVM 不起作用

Question

我想在我的应用程序中添加一个动态微型图表，但它不起作用。从方法调用后，会添加一个值，它会为我的图表制作一个全新的微型图表以具有新值，但更改在应用程序中不可见。所以旧的价值观留下来，没有新的。谢谢你帮助我。

WeightList = new List<float>();
        WeightList.Add(0);
        WeightList.Add((float)74.3);
        entries = new ChartEntry[30];
        SyncArray();

private void SyncArray()
    {
        if (WeightList.Count != entries.Length)
        {
            entries = new ChartEntry[WeightList.Count];
        }

        for (int i = 0; i <= WeightList.Count - 1; i++)
        {
            if (i == WeightList.Count - 1 || i == 0)
            {
                entries[i] = new ChartEntry(WeightList[i]) { Label = "" + i, ValueLabel = "" + WeightList[i] };
            }
            else
            {
                entries[i] = new ChartEntry(WeightList[i]) { Label = "" + i };
            }
        }
        chart = new LineChart() { Entries = entries, BackgroundColor = SKColors.Transparent };
        Chart = chart;
    }

public LineChart Chart
    {
        get => chart;
        set => SetProperty(ref chart, value);
    }

public float Weight
    {
        get => weight;
        set
        {
            weight = value;
            WeightList.Add(weight);
            SyncArray();
        }
    }

Answer 1

致谢：@Jason 要更改的内容：

private void SyncArray()
{
    if (WeightList.Count != entries.Length)
    {
        entries = new ChartEntry[WeightList.Count];
    }

    for (int i = 0; i <= WeightList.Count - 1; i++)
    {
        if (i == WeightList.Count - 1 || i == 0)
        {
            entries[i] = new ChartEntry(WeightList[i]) { Label = "" + i, ValueLabel = "" + WeightList[i] };
        }
        else
        {
            entries[i] = new ChartEntry(WeightList[i]) { Label = "" + i };
        }
    }
    Chart = new LineChart() { Entries = entries, BackgroundColor = SKColors.Transparent };
}

具有动态 Michrochart-NugetPackage 的 MVVM 不起作用

MVVM with dynamic the Michrochart-NugetPackage doesn't work

c#

xamarin

mvvm

charts