Open Internet Properties and wait until user close it C#

Question

Is there any possibility to open Internet Properties window..
Code:

System.Diagnostics.Process p;
p = System.Diagnostics.Process.Start("InetCpl.Cpl", ",4");

..and wait until user close it? (and then check internet connection and continue)

This code not work:

p.WaitForExit();

I think this problem is related to Open explorer window and wait for it to close but solution for this contains only tips specific for windows explorer browser window.

Can I do this in C#?

Solution
Someone put here (only for a short moment) this full command how to open Internet Properties window:

C:\Windows\system32\rundll32.exe C:\Windows\system32\shell32.dll,Control_RunDLL C:\Windows\system32\inetcpl.cpl,,4

I tried it .. and really .. it works!

System.Diagnostics.Process p;
p = System.Diagnostics.Process.Start("rundll32.exe",
    @"C:\Windows\system32\shell32.dll,Control_RunDLL"
    + " C:\Windows\system32\inetcpl.cpl,,4");
p.WaitForExit();
MessageBox.Show("Properties closed");

I get "Properties closed" message only after I close Properties window.
No PID needed .. easy and perfectly elegant solution.
If the user that wrote the original response with this command write it again, I accept his solution.

Answer 1

Use the below Code to open control panel in separate process:

System.Diagnostics.Process.Start(@"C:\Windows\system32\rundll32.exe"
    , @"C:\Windows\system32\shell32.dll,Control_RunDLL"
    + " C:\Windows\system32\inetcpl.cpl,,4");

and then you can WaitForExit();