How to draw line chart in telerik rad chart controls using observablecollections:

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Silverlight

C#5.0

Telerik

in my ObservableCollection i have

ObservableCollection<DataInfo> datacollections = new ObservableCollection<DataInfo>();
public class DataInfo
	{
 	    public string nOut;
            public string nCmp;
            public string nAdj;
            public string nCar;
            public string iCar;
            public string cSig;
	}

I want X-Value is DateTime and Y-Value is ObservableCollections.
How assign observalcollection as Y-Value(double valueY) (That the DataInfo class as Y-Value)

DataPoint(double valueX, double valueY);

Please Help Me..