Yes i have written the code for creating the composite chart

Dim strBlockID As String

Dim dtStartDate As DateTime

Dim iCount, iInnerCount, iOuterCount As Integer

Dim oDs As DataSet

Dim drRow As DataRow

Dim axisX, axisY As AxisItem

Dim myChartArea As ChartArea

Dim seriesA As NumericTimeSeries

Dim series As New NumericTimeSeries

Dim dtTable, dtChart As DataTable

Dim objBoxAnnotation As New Infragistics.UltraChart.Resources.Appearance.BoxAnnotation

Dim myColumnLayer, myColumnLayer1 As ChartLayerAppearance

Try

' MessageBox.Show(DateTime.Now.ToString("MM/dd/yy H:mm"))

oDs = SqlHelper.ExecuteDataset(strConnectionString, CommandType.StoredProcedure, "TEST_CHART")

myChartArea = New ChartArea()

'------- Chart Back Ground Color ---------

myChartArea.PE.Fill = Color.LightCyan

axisX = New AxisItem()

axisY = New AxisItem()

' myColumnLayer = New ChartLayerAppearance()

' myColumnLayer1 = New ChartLayerAppearance()

Me.UltraChart1.ChartType = ChartType.Composite

Me.UltraChart1.CompositeChart.ChartAreas.Add(myChartArea)

'-------- Setting the Width and Height of Chart --------

Panel1.Width = 1000

Panel1.Height = 650

Panel1.AutoScroll = True

Me.UltraChart1.Width = 1500

Me.UltraChart1.Height = 600

Me.UltraChart1.AcceptsFocus = False

'----- Defining X axis ----

axisX.OrientationType = AxisNumber.X_Axis

axisX.DataType = AxisDataType.Time

' axisX.Labels.SeriesLabels.Layout.Behavior = Infragistics.UltraChart.[Shared].Styles.AxisLabelLayoutBehaviors.[Auto]

axisX.TickmarkStyle = AxisTickStyle.Percentage

'axisX.TickmarkInterval = DateTime.Parse("6/2/2008").Ticks - DateTime.Parse("6/5/2008").Ticks

axisX.Extent = 100

axisX.Labels.Visible = False

axisX.SetLabelAxisType = SetLabelAxisType.GroupBySeries

axisX.Labels.ItemFormatString = "<ITEM_LABEL>"

axisX.Labels.Orientation = TextOrientation.VerticalLeftFacing

myChartArea.Axes.Add(axisX)

'----- Defining Y axis ------

axisY.OrientationType = AxisNumber.Y_Axis

axisY.Extent = 150

axisY.RangeType = AxisRangeType.Custom

axisY.TickmarkInterval = 10000

axisY.RangeMax = 260000

axisY.TickmarkStyle = AxisTickStyle.DataInterval

axisY.DataType = AxisDataType.Numeric

axisY.Labels.ItemFormatString = "<DATA_VALUE:00.##>"

axisX.MajorGridLines.Visible = False

axisX.MinorGridLines.Visible = False

axisY.MajorGridLines.Visible = False

axisY.MinorGridLines.Visible = False

myChartArea.Axes.Add(axisY)

dtTable = oDs.Tables(0).Copy

dtChart = fnEmptyRow(dtTable)

seriesA = GetNumericTimeSeriesBoundStepGraph(dtChart)

'----- Defining a Step Area Chart -------

Dim Paint As Infragistics.UltraChart.Resources.Appearance.PaintElement

Paint = fnColor(dtChart.Rows(0)("COLOR"))

seriesA.PEs.AddRange(New Infragistics.UltraChart.Resources.Appearance.PaintElement() {Paint})

myColumnLayer = New ChartLayerAppearance()

myColumnLayer.ChartType = ChartType.StepAreaChart

myColumnLayer.ChartArea = myChartArea

myColumnLayer.AxisX = axisX

myColumnLayer.AxisY = axisY

For i As Integer = 0 To oDs.Tables(1).Rows.Count - 1
dtSeries = oDs.Tables(1).Clone

drRow = dtSeries.NewRow

drRow(0) = oDs.Tables(1).Rows(i)("Block_Id")
drRow(1) = oDs.Tables(1).Rows(i)("DEMAND_ORDER_ID")

drRow(2) = oDs.Tables(1).Rows(i)("STARTDTE")
drRow(3) = oDs.Tables(1).Rows(i)("ENDDTE")

drRow(4) = oDs.Tables(1).Rows(i)("MFG_QTY_IN_BLOCK")drRow(5) = oDs.Tables(1).Rows(i)("BLOCK_SIZE")
dtSeries.Rows.Add(drRow)

drRow = Nothing

drRow = dtSeries.NewRow

drRow(0) = oDs.Tables(1).Rows(i)("Block_Id")
drRow(1) = oDs.Tables(1).Rows(i)("DEMAND_ORDER_ID")

drRow(2) = oDs.Tables(1).Rows(i)("ENDDTE")
drRow(3) = oDs.Tables(1).Rows(i)("STARTDTE")

drRow(4) = oDs.Tables(1).Rows(i)("MFG_QTY_IN_BLOCK")drRow(5) = oDs.Tables(1).Rows(i)("BLOCK_SIZE")
dtSeries.Rows.Add(drRow)

If dtSeries.Rows.Count > 0 Then

series = GetNumericSeriesBound1(dtSeries)

myColumnLayer1.Series.Add(series)

Me.UltraChart1.CompositeChart.Series.Add(series)
End If

Next

Private Function GetNumericSeriesBound1(ByVal table As DataTable) As NumericTimeSeriesDim series As New NumericTimeSeries
series.Label = table.Rows(0)(0)

series.Key = table.Rows(0)(0)

' this code populates the series from an external data source

series.Data.DataSource = table

series.Data.TimeValueColumn = "STARTDTE"

'series.Data.LabelColumn = "Label Column"

series.Data.ValueColumn = "MFG_QTY_IN_BLOCK"

Return series
End Function

your stated problem was "In the stack area chart for a new bar doesnt start from the zero position."

in your code, i only see one layer, "myColumnLayer," and it has its ChartType set to StepAreaChart.

is this the layer with the problem?  and if so, where on the chart is the zero position?