Change Series Color at Runtime

[Matt]

Hi we are evaluating telerik controls for use in our application.

Problem:   The series won't change colors when the color is set at runtime.



Background:
I'm using ChartFX Winforms 2009 Q2

I am creating a solution where a chart is embedded in a Grid cell. 
I use the grid.cellformatting event to set the grid image if the rowinfo tag has not been set, much like is suggested in the telerik sample for: Multiple child views with RadGridView for WinForms

To simplify the test, I just default the series bar value to: "series.Appearance.FillStyle.MainColor = Drawing.Color.Green " (see bulleted line in code block below)

Eventually I need to add a piece of code that will set the series color based on the value.  For now I have just defaulted the value to show as green.

I have referenced other posts in the forum and added the lines to updategraphics, refresh, and still could not get the series to turn green.

Code:

    Private _chart As New RadChart

 Private Sub PrepareChart()
        Dim radChart As New GridToleranceChart
        Me._chart = radChart.chart
        Me._chart.SkinsOverrideStyles = False
    End Sub

GridToleranceChart is a usercontrol that has a radchart on it.  I use an instance of this usercontrol, and reference its public chart property, so I could set some visual elements at designtime.  PrepareChart is called when the form loads.

Private Sub grid_CellFormatting(ByVal sender As Object, _

ByVal e As CellFormattingEventArgs) _

Handles grid.CellFormatting

Dim column As GridViewDataColumn = TryCast(e.CellElement.ColumnInfo, GridViewImageColumn)

If column IsNot Nothing AndAlso StrComp(column.FieldName, _

Constants.DefaultToleranceColumnNames.TolPercentChart, CompareMethod.Text) = 0 Then

If e.CellElement.RowInfo.Tag Is Nothing Then

Me._chart.Series.Clear()

column.Width = 300

column.AllowResize = False

e.CellElement.RowElement.RowInfo.Height = 60

Dim series As New Telerik.Charting.ChartSeries()

series.Appearance.FillStyle.MainColor = Drawing.Color.Green

series.Type = Telerik.Charting.ChartSeriesType.Bar

series.Name = "percentOfTolSeries"

series.Appearance.LabelAppearance.Visible = False

' Get the value to add to the series from another cell in the same row of the cell that is being edited

' Add the value to the series

Dim rowInfo As GridViewRowInfo = TryCast(e.CellElement.RowInfo, GridViewDataRowInfo)

Dim value As Decimal = CDec(rowInfo.Cells(Constants.DefaultToleranceColumnNames.PercentOfTol).Value)

series.Items.Add(New Telerik.Charting.ChartSeriesItem(value))

Me._chart.Series.Add(series)

Me._chart.Refresh()

Me._chart.Update()

Me._chart.UpdateGraphics()

e.CellElement.RowInfo.Tag = Me._chart.GetBitmap()

End If

e.CellElement.Image = TryCast(e.CellElement.RowInfo.Tag, System.Drawing.Image)

e.CellElement.ImageLayout = ImageLayout.Center

e.CellElement.DrawBorder = False

e.CellElement.Text = ""

e.CellElement.Padding = New Padding(0, 0, 0, 0)

End If

End Sub

Your help is greatly appreciated.

[Robert]

Matt,

Try setting the FillType on the series as well.

series.Appearance.FillStyle.FillType = Telerik.Charting.Styles.FillType.Solid;
series.Appearance.FillStyle.MainColor = Color.Green;

I hope this helps.

- Robert

[Matt]

I guess my code was working.  My values were too small to register on the grid.  since the values were < 1, the only thing that was rendering was the bar's border, which was white.  ID10T error.  Thanks for the quick response and the suggestion though.

[Renuka]

After deploying the project, raddock & radhtmlchart are not displayed but this is not happening in the development system,the problem is observed in the production system.is there any system(pc) specific configuration needs to be done?please replay the comment 

Thank you

 

 

[Hristo]

Hi Renuka,

Thank you for writing.

It is not necessary to configure the clients` machine in a special way so that the controls be displayed. You can check the following article discussing the various deployment options: http://docs.telerik.com/devtools/winforms/installation-deployment-and-distribution/application-deployment.

The RadChart control has long been deprecated if possible please upgrade and use RadChartView.

Regards,
Hristo
Progress Telerik