Change axis plot values after databind?

[joseph_korn]

For example, if I am binding my chart to a dataset I could write some code like this:

Me.RadChart1.DataManager.DataSource = myDataSet
Me.RadChart1.DataManager.ValuesXColumn = "SomeValue"

Is it possible, after a databind, to get access to those plot values of "SomeValue" so that they can be updated later on? I realize that I could change the dataset value and rebind if needed, but I am wondering if it is possible to get access to the values in the chart once they are bound.

[Dwight]

Hi Joseph,

Thank you for writing.

You can manipulate the data after the data binding by simply accessing the items in the required series:

	Me.RadChart1.DataManager.DataSource = myDataSet
	Me.RadChart1.DataManager.ValuesXColumn = "SomeValue"
	Me.RadChart1.DataManager.DataBind()
	Me.radChart1.Series(0).Items(0).YValue = 15

Should you have further questions, do not hesitate to write us back.

Sincerely yours,
Evtim
the Telerik team

Instantly find answers to your questions at the new Telerik Support Center

[joseph_korn]

Thanks for the reply, but now after reading my original post, I realize that I was not using the correct terms.. The data I am looking to change is not the plot values, but the plot labels..

I wish to change the labels of the x or y axis after databind if it is possible.. Is there any way?

[Dwight]

Hi Joseph,

It is possible to change the labels on both axes. What you should do is handle the BeforeLayout event. At this point the labels are already created, and you can change their values to the required ones. Here is an example:

	Public Sub New()
	InitializeComponent()
	AddHandler Me.radChart1.BeforeLayout, AddressOf radChart1_BeforeLayout
	End Sub
	Private Sub radChart1_BeforeLayout(ByVal sender As Object, ByVal e As EventArgs)
	Dim i As Integer = 0
	While i < Me.radChart1.PlotArea.YAxis.Items.Count
	Me.radChart1.PlotArea.YAxis.Items(i).Appearance.RotationAngle = 20
	Me.radChart1.PlotArea.YAxis.Items(i).TextBlock.Text = String.Format("new label {0}", i)
	i = i + 1
	End While
	End Sub

I hope this example will help.
If you have further questions, drop us a line. We will be glad to help.

Regards,
Evtim
the Telerik team

Instantly find answers to your questions at the new Telerik Support Center