我正在关注本教程中的示例: 但不幸的是,他们的文档非常模糊,我无法正常工作。如何在MVVM中使用AutoSeriesGenerator Visiblox
http://www.visiblox.com/blog/posts/2011/06/13/data-binding-with-visiblox-charts/#asg
什么我试图做的是使用AutoSeriesGenerator创建一个新的系列自动为我也补充一点,供LineSeries到主Y轴。我希望你们中的一些人对Visiblox有很好的体验。这里是我认为他们的例子应该在C#中表示:
<local:WeatherStationsData x:Key="dataCollection">
<local:WeatherStationTemperature>
<local:HourTemperature Hour="1" Temperature="10" />
<local:HourTemperature Hour="2" Temperature="14" />
</local:WeatherStationTemperature>
<local:WeatherStationTemperature>
<local:HourTemperature Hour="1" Temperature="20" />
<local:HourTemperature Hour="2" Temperature="19" />
</local:WeatherStationTemperature>
</local:WeatherStationsData>
</UserControl.Resources>
<Grid x:Name="LayoutRoot">
<charts:Chart x:Name="Chart"
charts:AutoSeriesGenerator.XValuePath="Hour"
charts:AutoSeriesGenerator.YValuePath="Temperature"
charts:AutoSeriesGenerator.ChartSeriesProvider="LineSeries"
charts:AutoSeriesGenerator.ItemsSource="{StaticResource dataCollection}">
<charts:Chart.XAxis>
<charts:LinearAxis />
</charts:Chart.XAxis>
<charts:Chart.YAxis>
<charts:LinearAxis />
</charts:Chart.YAxis>
</charts:Chart>
//X and Y points
public class ChartDataPoint
{
public DateTime X { get; set; }
public float Y { get; set; }
public ChartDataPoint(DateTime X, float Y)
{
this.X = X;
this.Y = Y;
}
}
//represents a dataseries - collection of datapoints
public class DataPointsCollection : ObservableCollection<ChartDataPoint>
{
}
//the "dataseries"
public class DataSeries : ObservableCollection<DataPointsCollection>
{
}
But it isn't working as expected.
public IChartSeries CreateSeries(object targetParent, object boundObject)
{
LineSeries lineSeries = null;
if (targetParent is LineSeries)
{
lineSeries = new LineSeries();
lineSeries.YAxis = new LinearAxis();
AxisCollection.Add(lineSeries.YAxis);
}
return lineSeries;
}
他们的文件说,targetObject是业务对象的IChartSeries所缠绕。但是我得到的是一个集合而不是对象。而且这种方法总是被多次调用,这意味着它会生成很多Lineseries。 我尝试过CollectionChanged事件,它是同样的问题。它不会被调用一次,但会被多次调用,这对我来说没有任何意义。
我该如何解决这个问题,谢谢。