Hi to all. I am having an unusual problem with the UltraChart control when UltraChart.ChartType = GanttChart and UltraChart.GanttChart.ShowOwners = True. I've noticed with this setting that the UltraChart.FillSceneGraph() method is continuously executed (and there is nothing else in the call stack beneath it). Unfortunately for me I have some implemented some additional code within this method and hence the CPU is very active when the UltraChart is displayed even though the application is effectively idle. If I set ShowOwners = False, or if I set the Owner property of every GanttTimeEntry to an empty string then the problem does not occur.
Given the complexity of my application, and the fact that my UltraChart implementation is as part of a larger custom control I am not able to provide any source code. I have checked all calls to UltraChart.Invalidate and UltraChart.Refresh methods and there are none that could be causing this problem. I am not able to reproduce the error in a sample application. I have also ruled out InteractionTools derived classes and IRenderLabel implementing classes as a potential cause.
Any ideas?
i managed to reproduce the problem, so i logged it (bug # 11142) and fixed it. it should be resolved in an upcoming hotfix. for info on this bug such as the expected release date of the hotfix, please contact Infragistics Developer Support at http://infragistics.com/gethelp
Yes you are correct Neil (and I probably should have made that more clear it my previous post) that it is the UltraChart.GanttChart.OwnersLabelStyle.FontSizeBestFit property that causes the FillSceneGraph event to fire continuously if it is set to True.
I assume that the issue you found and fixed was related to setting the FontSizeBest Fit UltraChart1.GanttChart.OwnersLabelStyle.FontSizeBestFit ) or was the issue something else?
OK. I've solved the problem myself and I can reproduce the error. To check this out yourself just create a new form with two UltraCheckEditors called UltraCheckEditor1 and UltraCheckEditor1, and an UltraChart called UltraChart1. Then paste this code into the form's code:
Private Sub Form_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load UltraChart1.ChartType = Infragistics.UltraChart.Shared.Styles.ChartType.GanttChart UltraCheckEditor1.Text = "Show Owners" UltraCheckEditor2.Text = "FontSizeBestFit" LoadData() End Sub
Private Sub UltraCheckEditor1_CheckedChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles UltraCheckEditor1.CheckedChanged UltraChart1.GanttChart.ShowOwners = UltraCheckEditor1.CheckedEnd Sub
Private Sub UltraCheckEditor2_CheckedChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles UltraCheckEditor2.CheckedChanged UltraChart1.GanttChart.OwnersLabelStyle.FontSizeBestFit = UltraCheckEditor2.CheckedEnd Sub
Private Sub UltraChart1_FillSceneGraph(ByVal sender As Object, ByVal e As Infragistics.UltraChart.Shared.Events.FillSceneGraphEventArgs) Handles UltraChart1.FillSceneGraph Debug.Print(String.Format("UltraChart1.FillSceneGraph @ {0}", Now.ToString("HH:mm:ss.ff")))End Sub
Now run the code then click on the check boxes and you will see a stream of messages in the Immediate Window in VS when both check boxes are ticked.