The only way to do this is to handle FillSceneGraph event and overlay symbol icons on top of existing line points.

    Private Sub UltraChart1_FillSceneGraph(ByVal sender As System.Object, ByVal e As Infragistics.UltraChart.Shared.Events.FillSceneGraphEventArgs) Handles UltraChart1.FillSceneGraph
        Dim shapeArray As New ArrayList
        Dim line As Polyline

        shapeArray.Add("A")
        shapeArray.Add("E")
        shapeArray.Add("E")
        shapeArray.Add("A")
        shapeArray.Add("E")

        For Each p As Primitive In e.SceneGraph
            If TypeOf p Is Polyline Then line = CType(p, Polyline)
        Next

        If line Is Nothing Then Exit Sub

        For i As Integer = 0 To line.points.Length - 1
            Dim s As New Symbol
            If shapeArray(i) = "A" Then
                s.icon = SymbolIcon.Circle
            Else
                s.icon = SymbolIcon.Square
            End If

            s.iconSize = SymbolIconSize.Large
            s.point = line.points(i).point
            e.SceneGraph.Add(s)
        Next
    End Sub

Hi Mike,

I was unable to resolve this.

I am trying to create a linechart, and assign different shapes to different datapoints depending on a value of a status column. 

I attached my chart where I drew some circles and squares around different data points to illustrate what I am trying to do.

 Here is the code

            ucChart.Data.DataSource = dt

            ucChart.Data.SwapRowsAndColumns = True

            ucChart.ChartType = Infragistics.UltraChart.Shared.Styles.ChartType.LineChart

            ucChart.LineChart.TreatDateTimeAsString = False

            ucChart.LineChart.NullHandling = Infragistics.UltraChart.Shared.Styles.NullHandling.DontPlot

            'set wording on the chart

            ucChart.Axis.X.Labels.Orientation = Infragistics.UltraChart.Shared.Styles.TextOrientation.Horizontal

            ucChart.Axis.X.Labels.ItemFormatString = "<ITEM_LABEL:MM/dd/yyyy>"

            ucChart.Axis.Y.Labels.Orientation = Infragistics.UltraChart.Shared.Styles.TextOrientation.Horizontal

            ucChart.TitleTop.Text = "Inventory History For " & dt.Rows(0).Item("productDesc")

            ucChart.TitleTop.Font = New System.Drawing.Font("Ariel", 14.0F, FontStyle.Bold)

            ucChart.TitleTop.Visible = True

            ucChart.TitleBottom.Text = "Inventory Date"

            ucChart.TitleBottom.Font = New System.Drawing.Font("Ariel", 8.5F, FontStyle.Regular) '

            ucChart.TitleBottom.Visible = True

            ucChart.Data.DataBind()

Helen,

Have you been able to resolve this issue?  If you still require assistance please refer to my previouls reply asking for more details which would help me investigate this issue further.

Michael S.