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You can have ProgramA dedicate a thread to using System.Diagnostics.Process<wbr />.WaitForEx<wbr />it, and have the thread exit and raise the event in the UI thread.
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You can have ProgramA dedicate a thread to using System.Diagnostics.Process.WaitForExit, and have the thread exit and raise the event in the UI thread.

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sounds cool... how does that look in code?
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sounds cool... how does that look in code?

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I have a program i wrote, lets call it ProgramA... &nbsp;basically it opens another program lets call it ProgramZ, and gains a handle to the program using the User32.dll. &nbsp;What im trying to do is have ProgramA display a message box when ProgramZ gets closed (when the user closes ProgramX).
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I have a program i wrote, lets call it ProgramA...  basically it opens another program lets call it ProgramZ, and gains a handle to the program using the User32.dll.  What im trying to do is have ProgramA display a message box when ProgramZ gets closed (when the user closes ProgramX).

trigger an event when an application stops

C# is an object-oriented programming language created in conjunction with Microsoft’s .NET framework. Compilation is usually done into the Microsoft Intermediate Language (MSIL), which is then JIT-compiled to native code (and cached) during execution in the Common Language Runtime (CLR).

The .NET Framework is not specific to any one programming language; rather, it includes a library of functions that allows developers to rapidly build applications. Several supported languages include C#, VB.NET, C++ or ASP.NET.