datapoints in lineseries

Hi! How can I add datapoints to the line series in code behind whithout binding? I use Visual Basic language. Please write an example. Thanks!

Hello,

For just adding a collection of data to a line series once, the trick is to access each series' ItemsSource property through the Chart object they belong to. To do this, in the XAML, your chart needs a name, along with however many LineSeries you want to display:

<ch:Chart x:Name="MyChart">
      <ch:LineSeries />           
</ch:Chart>

Then in code you can populate the ItemsSource as follows:

Public Sub New()
    Me.InitializeComponent()

    Dim rnd = New Random
    Dim myList = New List(Of Point)

    For i As Integer = 1 To 30
      myList.Add(New Point(i, rnd.Next(2, 10)))
    Next

    MyChart.Series(0).ItemsSource = myList
  End Sub

If you want to dynamically add data points during the app's lifetime you just need use an ObservableCollection(Of Point) instead of the List(Of Point) shown above. Whenever a new point is added to the collection the line series will update.

Thanks for your answer!