Begin Property

expression.Begin

expression    Required. An expression that returns a ChSegment object.

Remarks

Use the Value property of the returned ChSegmentBoundary object to set the beginning value for the specified segment of the format map. Use the Interior, Line, and Border properties to format the segment boundary.

Example

This example binds Chartspace1 to the Order Details table in the SQL Server Northwind database. Then, a format map is created that highlights the bottom 10% of the values in red and the top 20% of values in green.

Sub Window_Onload()

    Dim serseries1
    Dim segBottom10Pct
    Dim segTop20Pct
    Dim chConstants

    Set chConstants = ChartSpace1.Constants

    ' The following two lines of code bind Chartspace1 to the Order Details table in the
    ' Northwind SQL Server database.
    ChartSpace1.ConnectionString = "Provider=SQLOLEDB.1;Persist Security Info=TRUE;" & _
                                   "Integrated Security=SSPI;Initial Catalog=Northwind;" & _
                                   "Data Source=SeverName;"
    ChartSpace1.DataMember = "Order Details"

    ' The following two lines of code bind Chartspace1 to the Quantity and ProductID fields
    ' in the Order details table.
    ChartSpace1.SetData chConstants.chDimCategories, chConstants.chDataBound, "ProductID"
    ChartSpace1.SetData chConstants.chDimValues, chConstants.chDataBound, "Quantity"

    ' Create a format map.
    ChartSpace1.SetData chConstants.chDimFormatValues, chConstants.chDataBound, "Quantity"

    ' Set a variable to the first series in the first chart in Chartspace1.
    Set serseries1 = ChartSpace1.Charts(0).SeriesCollection(0)

    ' Add a segment to the format map. This segment will
    ' represent the bottom 10% of values in the chart.
    Set segBottom10Pct = serseries1.FormatMap.Segments.Add

    ' Measure the segment boundaries based upon a percentage.
    segBottom10Pct.Begin.ValueType = chConstants.chBoundaryValuePercent
    segBottom10Pct.End.ValueType = chConstants.chBoundaryValuePercent

    ' Set the beginning value to 0%, and the ending value to 10%.
    segBottom10Pct.Begin.Value = 0
    segBottom10Pct.End.Value = 0.1

    ' Format the interior of the matching values.
    segBottom10Pct.Begin.Interior.Color = "red"
    segBottom10Pct.End.Interior.Color = "red"

    ' Add a segment to the format map. This segment will
    ' represent the top 20% of values in the chart.
    Set segTop20Pct = serseries1.FormatMap.Segments.Add

    ' Measure the segment boundaries based upon a percentage.
    segTop20Pct.Begin.ValueType = chConstants.chBoundaryValuePercent
    segTop20Pct.End.ValueType = chConstants.chBoundaryValuePercent

    ' Set the beginning value to 80%, and the ending value to 100%.
    segTop20Pct.Begin.Value = 0.8
    segTop20Pct.End.Value = 1

    ' Format the interior of the matching values.
    segTop20Pct.Begin.Interior.Color = "Green"
    segTop20Pct.End.Interior.Color = "Green"

End Sub