我正在關注本教程中的示例: 但不幸的是,他們的文檔非常模糊,我無法正常工作。如何在MVVM中使用AutoSeriesGenerator Visiblox
http://www.visiblox.com/blog/posts/2011/06/13/data-binding-with-visiblox-charts/#asg
什麼我試圖做的是使用AutoSeriesGenerator創建一個新的系列自動爲我也補充一點,供LineSeries到主Y軸。我希望你們中的一些人對Visiblox有很好的體驗。這裏是我認爲他們的例子應該在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;
}
他們的文件說,targetObject是業務對象的IChartSeries所纏繞。但是我得到的是一個集合而不是對象。而且這種方法總是被多次調用,這意味着它會生成很多Lineseries。 我嘗試過CollectionChanged事件,它是同樣的問題。它不會被調用一次,但會被多次調用,這對我來說沒有任何意義。
我該如何解決這個問題,謝謝。