Steema Central

Daniel Ruehmer wrote: Is there anything you can tell me about this behavior?

  public partial class Form1 : Form
  {
    public Form1()
    {
      InitializeComponent();
      InitializeChart();
    }

    private TChart tChart1;

    private void InitializeChart()
    {
      tChart1 = new TChart();
      tChart1.Dock = DockStyle.Fill;
      this.Controls.Add(tChart1);

      tChart1.Series.Add(typeof(Bar));
      tChart1[0].FillSampleValues();
    }
  }

I can't reproduce it here and it isn't by design. I ran a test with TeeChart for .NET v2.0.3203.23272 released to the public on 08/10/2008.

...

Can you reproduce the problem using the same version of TeeChart.dll and the code above?

Daniel wrote: I'm using the same assembly version and yes, I can reproduce it with your code sample. You need to have a DNS server

Daniel wrote: I hope this helps you reproducing the behavior.

Daniel wrote: Maybe there is a problem with the actuality of certificates, i.e. if the certificate is known to the OS or not? (BTW your certificate ran out on December the 12th 2008).

Chris wrote: Anyhow, I'll build another update build of TeeChart for .NET v2 with our new certificate and I'll let you know when it's done for you to test.

Daniel wrote: Displaying the certificate in the DLLs file properties gained access to usertrust.com.

Daniel wrote: I'm really confused with this behavior. I'm trying now Windows Update on my virtual machine if this solves something, but I don't believe it, because the test PC is up to date...

summarise: these DNS requests do not appear if 1) the Digital Signature is valid and 2) the machine has a valid internet connection. Would you agree?

I think further investigations should be opened on two fronts:

Daniel wrote: 1) they do on the virtual machine and the test PC (and did on my development machine)
2) they appeared once but after "unplugging" the timeout is there again

Daniel wrote: edit:
Maybe you can try to set an unknown DNS in your network settings an see what happens?

Daniel wrote: Unfortunately now I'm sorry to say that I do not have my boss' permission to invest that lot of time into this problem anymore.

Just to make sure I understand: so, if your VM and test PC use TeeChart.dll with a valid Digital Certificate and they have a valid internet connection with working DNS servers, the unwanted DNS traffic does not appear? A yes or no answer would help

Here I used the "fake" DNS servers 22 22 22 22 and 33 33 33 33. The unwanted traffic of the kind you mention does not appear. This test was run using the TeeChart.dll with the nonvalid (out of date) Digital Certificate.

Ok. From my side, I think it is clear that the problem is not with the TeeChart.dll. What I could do, if you were interested, is to build an "empty" *.dll and sign it with Steema's Digital Certificate...