DataLabelsColumn for numeric values?

[Joel]

Is there a way to establish the datalabelscolumn for a numeric column?

I am returning  3 columns from a stored procedure.  Column 1 is weekname and has values 1-52 in rotating order, the other two are the series data.

DataLabelsColumn is being set in page.load as:

rctrend.PlotArea.XAxis.DataLabelsColumn = "weekname"

 

If from the stored procedure, I do this:  Select [weekname] as weekname
I get 3 series in my chart  and the datalabelscolumn directive is ignored.

If from the stored procedure, I do this:  Select convert(varchar(10),[weekname]) as weekname
or SELECT convert(text, convert(varchar(10),[weekname]) )) as weekname
I get 3 series in my chart and the datalabelscolumn directive is ignored.

If from the stored procedure, I do this:  SELECT 'w ' + convert(varchar(10), [weekname]) as weekname
DataLabelsColumn is respected and I get 2 series.

Whole routine is below:

    Private Sub MakeGraph()
        If Not IsPostBack Then
            rctrend.Chart.PlotArea.YAxis.AutoScale = True
            rctrend.PlotArea.YAxis.AutoScale = True
            rctrend.PlotArea.YAxis.IsZeroBased = False
            rctrend.PlotArea.XAxis.DataLabelsColumn = "weekname"
        End If

        rctrend.ChartTitle.TextBlock.Text = "Something"
        rctrend.DataSource = gensql.Get52WeekGraph
        rctrend.DataBind()

        If Not IsPostBack Then
            rctrend.Series(0).Appearance.ShowLabels = False
            rctrend.Series(1).Appearance.ShowLabels = False
        End If
    End Sub

[Giuseppe]

Hi Joel,

In this case you will need to manually specify the ChartSeries you want to bind like this so the control should not guess which of the data fields should be used to create series data:

Dim series As New ChartSeries()
series.DataYColumn = "Value1"
RadChart1.Series.Add(series)

Dim series2 As New ChartSeries()
series2.DataYColumn = "Value2"
RadChart1.Series.Add(series2)

RadChart1.PlotArea.XAxis.DataLabelsColumn = "weekname"

RadChart1.DataSource = gensql.Get52WeekGraph
RadChart1.DataBind()

All the best,
Manuel
the Telerik team

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