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Excel Chart Formatting / Axes

Posted on 2007-11-29
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Last Modified: 2008-02-01
I'm running into a problem with Excel 2003 and VB.NET 2003.   My code is working mostly, but I'm having some trouble formating certain elements of the chart object.  The main problem is that I need the lables on the axis rotated using the orientation value.    I've included the code used to build the chart below, what I can't figure out is how to make the X-Axes values rotate 90 degrees.

Any help is greatly appreciated.
       Dim RangePeriod As Object

        Dim RangePercent As Object

        Dim finalCell As String = "C" & ds.Tables(0).Rows.Count + 1

        Dim FinalPctCell As String = "H" & ds.Tables(0).Rows.Count + 1

 

        '' set the range value

        RangePeriod = worksheet.Range("C2", finalCell)

        RangePercent = worksheet.Range("H2", FinalPctCell)

 

        ' The following code draws the chart

        Dim chartobjects As Object

        chartobjects = worksheet.ChartObjects(Missing.Value)

 

        Dim chartobject As Object

         ''chartObjects.Add(Left,Top,Width,Height)

        chartobject = chartobjects.Add(0, 0, 750, 650)

 

        Dim chart As Object

        chart = chartobject.Chart

 

        Dim source As Object = RangePercent

        Dim Gallery As Object = Excel.XlChartType.xl3DColumn

        Dim Format As Object = Missing.Value

        Dim PlotBy As Object = Excel.XlRowCol.xlColumns

        Dim CategoryLabels As Object = 0

        Dim SeriesLables As Object = 0

        Dim HasLegend As Object = False

        Dim Title As Object = "Chart"

        Dim ValueTitle As Object = "Dates"

        Dim ExtraTitle As Object = "Percent"

 

        Try

            chart.ChartWizard(source, Gallery, Format, PlotBy, CategoryLabels, SeriesLables, HasLegend, Title, _

                ValueTitle, ExtraTitle)

 

        Catch ex As Exception

            Throw ex

        End Try

 

 

        Dim oSeries As Excel.Series

        oSeries = chart.SeriesCollection(1)

        oSeries.XValues = RangePeriod

 

        Dim xlAxisCategory, xlAxisValue

 

        xlAxisCategory = CType(chart.Axes(, Excel.XlAxisGroup.xlPrimary), Excel.Axes)

        xlAxisCategory.Item(Excel.XlAxisType.xlCategory).HasTitle = True

 

        xlAxisValue = CType(chart.Axes(, Excel.XlAxisGroup.xlPrimary), Excel.Axes)

        xlAxisValue.Item(Excel.XlAxisType.xlValue).HasTitle = True

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Question by:lanexllc
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10 Comments
 
LVL 59

Accepted Solution

by:
Saurabh Singh Teotia earned 125 total points
ID: 20377014
U Meant this...


    ActiveChart.Axes(xlValue).Select
    With Selection.TickLabels
        .ReadingOrder = xlContext
        .Orientation = xlUpward

0
 

Author Comment

by:lanexllc
ID: 20377533
Perhaps I'm missing something obvious but when I add:
ActiveChart.Axes(xlAxisValue).select

I get: 'ActiveChart.Axes' is not declared or the module containing it is not loaded in the debugging session.
0
 
LVL 59

Expert Comment

by:Saurabh Singh Teotia
ID: 20377547
Well try this...

xlaxisvalue.select

this will do the trick...
0
 

Author Comment

by:lanexllc
ID: 20377604
hmm, tried that earlier and got

xlaxisvalue.select

Run-time exception thrown : System.MissingMemberException - Public member 'select' on type 'Axes' not found.

I must have it defined it incorrectly.  Is there no simple method to SELECT the values of one the Axes?
0
 
LVL 59

Expert Comment

by:Saurabh Singh Teotia
ID: 20377624
Hmmm well after again i went through ur code..this one should do this...

Chart.Axes(xlAxisValue).select
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Author Comment

by:lanexllc
ID: 20377947
again, I know i'm missing the obvious, but that causes the following exception:

System.Runtime.InteropServices.COMException - Unable to get the Axes property of the Chart class

Not sure if it helps but here are the last few lines where it's breaking.


        Dim xlAxisCategory, xlAxisValue
 

        xlAxisCategory = CType(chart.Axes(, Excel.XlAxisGroup.xlPrimary), Excel.Axes)

        xlAxisCategory.Item(Excel.XlAxisType.xlCategory).HasTitle = True
 

        xlAxisValue = CType(chart.Axes(, Excel.XlAxisGroup.xlPrimary), Excel.Axes)

        xlAxisValue.Item(Excel.XlAxisType.xlValue).HasTitle = True
 

        chart.ChartArea.Border.Weight = Excel.XlBorderWeight.xlThick
 

        '' THE FOLLOWING LINE CAUSES THE EXCEPTION

        chart.Axes(xlAxisValue).select()

        '' end

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LVL 59

Assisted Solution

by:Saurabh Singh Teotia
Saurabh Singh Teotia earned 125 total points
ID: 20377963
Well if i go through the code may be coz u have defined chart as a object and one of the possible reasons coz of which its giving u an error...
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Author Comment

by:lanexllc
ID: 20382557
That makes sense, but I've yet to see a better way of defining the objects.  Any advise on where to check?

Thanks!
0
 
LVL 59

Expert Comment

by:Saurabh Singh Teotia
ID: 20383256
Well lets go back to basic...try making a chart by recording macro...by making a chart...and wherever the data points are variable..lets define it to what we want to do...and by this way this thing will be resolved...
0
 

Author Comment

by:lanexllc
ID: 20383513
We'll after messing around with it some more, the issue was indeed the method in which I was creating the objects.  By declaring them as the proper types, I was finally able to select the axis, and make the changes required.

See Code:
        Dim xlAxisCategory As Excel.Axes

        xlAxisCategory = chart.Axes(, Excel.XlAxisGroup.xlPrimary)

        xlAxisCategory.Item(Excel.XlAxisType.xlCategory).HasTitle = True
 

        xlAxisCategory.Item(Excel.XlAxisType.xlValue).Select()
 

        With app.Selection.TickLabels

            .Orientation = Excel.XlOrientation.xlDownward

        End With

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