OK,

Finally came across an example:

https://es.infragistics.com/help/winforms/chart-creating-a-composite-chart-in-code-part-1-of-2

and

https://es.infragistics.com/help/winforms/chart-creating-a-composite-chart-in-code-part-2-of-2

I can display 2 seperate charts - one gantt and one line.  Now the tricky part is combining them.  When I attempt this, I can display the gantt chart but not the line.

Can 2 charts share a DateTime X Axis between layers?  I've tried fifddling with the axis to no avail.  My code is as follows:

Private Sub CreateCombinedComposite()

' this causes a problem...

' Me.UltraChart2 = New WebUI.UltraWebChart.UltraChart()

' build the composite chart

Me.UltraChart2.ChartType = [Shared].Styles.ChartType.Composite

' create a chart area

Dim ca1 As New ChartArea()

ca1.BoundsMeasureType = [Shared].Styles.MeasureType.Pixels

ca1.Bounds = New Rectangle(2, 2, 500, 500)

ca1.Visible = True

Me.UltraChart2.CompositeChart.ChartAreas.Add(ca1)

' create axis

Dim axisX As New AxisItem

Dim axisY As New AxisItem

axisY.OrientationType = [Shared].Styles.AxisNumber.Y_Axis

axisY.Labels.ItemFormatString = "<ITEM_LABEL>"

axisY.Labels.Orientation = [Shared].Styles.TextOrientation.VerticalRightFacing

axisY.DataType = [Shared].Styles.AxisDataType.String

axisY.SetLabelAxisType = Core.Layers.SetLabelAxisType.GroupBySeries

axisX.OrientationType = [Shared].Styles.AxisNumber.X_Axis

'axisX.SetLabelAxisType = Core.Layers.SetLabelAxisType.GroupBySeries

axisX.Labels.ItemFormatString = "<ITEM_LABEL:dd-MM-yy>"

axisX.Labels.Orientation = [Shared].Styles.TextOrientation.VerticalRightFacing

axisX.DataType = [Shared].Styles.AxisDataType.Time

ca1.Axes.Clear()

ca1.Axes.Add(axisX)

ca1.Axes.Add(axisY)

' create chart layer appearence

Dim cla1 As New ChartLayerAppearance()

cla1.ChartType = [Shared].Styles.ChartType.GanttChart

cla1.AxisX = axisX

cla1.AxisY = axisY

cla1.ChartArea = ca1

Me.UltraChart2.CompositeChart.ChartLayers.Add(cla1)

' add a series to the layer appearence

Dim gs1 As GanttSeries = CreateSeries("BS1")

gs1.Visible = True

cla1.Series.Add(gs1)

Me.UltraChart2.CompositeChart.Series.Add(gs1)

'----------------------

' add a line chart

'----------------------

' Dim ca2 As New ChartArea()

'Me.UltraChart2.CompositeChart.ChartAreas.Add(ca2)

Dim axisX2 As New AxisItem

'Dim axisY2 As New AxisItem

Dim axisY2_1 As New AxisItem

'axisY2.OrientationType = [Shared].Styles.AxisNumber.Y_Axis

'axisY2.Labels.ItemFormatString = "<DATA_VALUE:0.#>"

'axisY2.Labels.Orientation = [Shared].Styles.TextOrientation.Horizontal

'axisY2.DataType = [Shared].Styles.AxisDataType.Numeric

'axisY2.RangeType = [Shared].Styles.AxisRangeType.Automatic

axisX2.OrientationType = [Shared].Styles.AxisNumber.X2_Axis

axisX2.SetLabelAxisType = Core.Layers.SetLabelAxisType.GroupBySeries

axisX2.Labels.ItemFormatString = "<ITEM_LABEL:dd-MM-yy>"

axisX2.Labels.Orientation = [Shared].Styles.TextOrientation.VerticalRightFacing

axisX2.DataType = [Shared].Styles.AxisDataType.Time

axisY2_1.Labels.ItemFormatString = "<DATA_VALUE:0.#>"

axisY2_1.OrientationType = [Shared].Styles.AxisNumber.Y2_Axis

axisY2_1.Labels.Visible = True

axisY2_1.DataType = [Shared].Styles.AxisDataType.Numeric

axisY2_1.Labels.Orientation = [Shared].Styles.TextOrientation.Horizontal

axisY2_1.RangeType = [Shared].Styles.AxisRangeType.Custom

axisY2_1.RangeMin = 0

axisY2_1.RangeMax = 12000

ca1.Axes.Add(axisX2)

'ca2.Axes.Add(axisY2)

'ca2.Axes.Add(axisY2_1)

ca1.Axes.Add(axisY2_1)

' create chart layer appearence

Dim cla2 As New ChartLayerAppearance()

cla2.ChartType = [Shared].Styles.ChartType.LineChart

cla2.AxisX = axisX

'cla2.a

'cla2.AxisY = axisY2_1 'axisY2

cla2.AxisY2 = axisY2_1

cla2.ChartArea = ca1

'cla2.AxisY2 = axisY2_1

Me.UltraChart2.CompositeChart.ChartLayers.Add(cla2)

Dim nts1 As NumericTimeSeries = CreateNumericTimeSeries()

'cla2.Series.Clear()

'cla2.Series.Add(nts1)

cla2.Series.Add(nts1)

Me.UltraChart2.CompositeChart.Series.Add(nts1)

End Sub

Private Function CreateSeries(ByVal label As String) As GanttSeries

Dim gs As New GanttSeries(label)

gs.Label = label

Dim giTaskA As New GanttItem("Task A")

Dim giTaskB As New GanttItem("Task B")

Dim giTaskC As New GanttItem("Task C")

giTaskA.Label = "Task A"

giTaskA.Times.Add("1-April-2009", "10-April-2009")

giTaskB.Label = "Task B"

giTaskB.Times.Add("10-April-2009", "15-April-2009")

giTaskC.Label = "Task C"

giTaskC.Times.Add("13-April-2009", "20-April-2009")

gs.Items.Add(giTaskA)

gs.Items.Add(giTaskB)

gs.Items.Add(giTaskC)

Return gs

End Function

Private Function CreateNumericTimeSeries() As NumericTimeSeries

Dim ns As New NumericTimeSeries()

ns.Visible = True

ns.Label = "eee"

ns.Points.Add(New NumericTimeDataPoint("1-April-2009", 1, "1", False))

ns.Points.Add(New NumericTimeDataPoint("1-May-2009", 1000, "2", False))

ns.Points.Add(New NumericTimeDataPoint("1-June-2009", 10000, "3", False))

ns.Points.Add(New NumericTimeDataPoint("1-July-2009", 10000, "4", False))

ns.Points.Add(New NumericTimeDataPoint("1-August-2009", 10000, "5", False))

Return ns

End Function

Any help appreciated!!

Andez