Hi there,

I tried the same with WinForms UltraChart and wanted to change the color of the lines in the ColumnLineChart.

I want to draw a horizontal line, which is in the color of the first chart bar:

I added the handler for "FillSceneGraph":

 private void m_chrtDotGain_FillSceneGraph(object sender, Infragistics.UltraChart.Shared.Events.FillSceneGraphEventArgs e)
{
    foreach (Infragistics.UltraChart.Core.Primitives.Primitive prim in e.SceneGraph)
    {
        if (prim is Infragistics.UltraChart.Core.Primitives.Polyline)
        {
            prim.PE.Fill = Color.Red;
        }
    }
}

This is the result:

The horizontal line is now red as desired, but also the color of the first chart bar has turned red.

Why is that?

Best regards,

Alexander

Hello Bert,

I am glad that you have been able to achieve your requirement according to my suggestion.

Please let me know if you need any further assistance with this matter.

Hi Vasya

This solved my problem, i just needed to add an extra check to see if the primitive was a polyline so i wouldnt get any exceptions.

Private Sub ucColumnLineChart_FillSceneGraph(sender As Object, e As Infragistics.UltraChart.Shared.Events.FillSceneGraphEventArgs) Handles ucColumnLineChart.FillSceneGraph
      For Each pr As Primitive In e.SceneGraph
           If pr.GetType.Equals(GetType(Polyline)) Then
                Dim pl As Polyline = CType(pr, Polyline)
                If Not pl Is Nothing Then
                     pl.PE.Fill = Drawing.Color.Red
                End If
           End If
      Next
End Sub

Thanks!

Hello Bert,

Thank you for getting back to me.

What I can suggest for achieving your requirement is handling FillSceneGraph server side event. In this event a the Fill property of the polyline`s PE could be changed to any color of your choice. For example:

  protected void UltraChart1_FillSceneGraph(object sender, Infragistics.UltraChart.Shared.Events.FillSceneGraphEventArgs e)

    {

        foreach (Primitive pr in e.SceneGraph)
        {
             Polyline pl = pr as Polyline;
               if (pl != null)
                {
                     pl.PE.Fill = Color.Red;
                }
 }
 }

I am also attaching a sample project illustrating my suggestion.

Please feel free to contact me if you have any additional questions regarding this matter.