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9.3

Shell,CreateProcess.Process.Start all fail to return correct PID

Asked by egl1044 in Visual Basic Programming, .NET, C# Programming Language

Tags: wrong pid returned

Internet Explorer 8.

Just wanted to give a heads up to all experts about a problem I ran into this morning.

It appears that any attempt to launch IE  with Shell(), CreateProcess(), Process.Start when additional instances are already open return the wrong PID.
At first I thought it was CreateProcess, so I tried to use the Shell command, that didn't work, so I fired up .NET and even that failed.
It works fine if and only you are launching the first instance. However if you already have an instance open and you try to use any of the above it will return the wrong PID.

This causes unpredicatable results especially if you want to use the PID to find the main window handle of the application you just launched. As an example if you tried to use the return PID from any of these calls to either walk the hWnds or EnumWindows() it will never find the correct match. This is the problem I ran into which lead to this discovery.

Open for suggestions in the mean time trying to find a solution that would return the correct PID. 
1:
2:
3:

Dim instance As Process
instance = Process.Start("C:\Program Files\Internet Explorer\iexplore.exe")
Console.WriteLine(instance.Id)
[+][-]08/02/09 05:34 PM, ID: 25001288Accepted Solution

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Zones: Visual Basic Programming, .NET, C# Programming Language
Tags: wrong pid returned
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Solution Provided By: jaime_olivares
Participating Experts: 1
Solution Grade: A
 
[+][-]08/02/09 05:14 PM, ID: 25001247Expert Comment

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[+][-]08/02/09 05:26 PM, ID: 25001269Author Comment

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[+][-]08/02/09 06:09 PM, ID: 25001389Author Comment

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