toolkit chart的用法

[zhaomingyun]

WPF绘画波形图，用toolkit和chart 绘画的，当鼠标放到一个点上时，它会自动显示这个点的坐标，如图中的某点（299,85.77），那么怎么通过程序把这个点的坐标值读过来呢？ 只能看得到，但我程序中要用这个坐标值，怎么才能获取到呢？程序源码如下

public List<DataPoint> ListPoint = new List<DataPoint>(10000);
public Test()
{
InitializeComponent();
Curve();
}
private void Curve()
{
DataSeries dataSeries = new DataSeries();
Chart chart = new Chart();
dataSeries.RenderAs = RenderAs.Line;
dataSeries.XValueType = ChartValueTypes.Numeric;

chart.ZoomingEnabled = true;
chart.ScrollingEnabled = false;
chart.AnimationEnabled = false;
const double pi = 3.1415926;
int count = 128;
Axis charAxisX = new Axis();
WaveGrid.Children.Clear();

//chart.AxesX.Add(charAxisX);//为图表添加一个AxesX


for (int i = 0; i < 10*count; i++)
{


DataPoint datapoint = new DataPoint();
datapoint.XValue = i;
datapoint.YValue = 100 * Math.Sin( pi*(double)i / 64 );
dataSeries.DataPoints.Add(datapoint);
}

//for (int i = 0; i < 10 * count /*ListPoint.Count*/; i++)
//{

// dataSeries.DataPoints.Add(ListPoint[i]);
//}
dataSeries.RenderAs = RenderAs.Line;
chart.Series.Add(dataSeries);
WaveGrid.Children.Add(chart);
}

[巨应打字员]

我不推荐用tookit chart，会和。net4.0 toolkitextend 冲突。 http://oxyplot.codeplex.com/ 还蛮不错的