How Can I Reliably Restart a C# WinForms Application?

How do I restart my C# WinForm Application?

The need to close and restart a C# .NET 2.0 WinForm Application arises in many development scenarios. However, solely using Application.Restart() is often unreliable.

A Reliable Solution

A robust method to restart the application is to combine Application.Restart() with Environment.Exit(0). This approach:

• Preserves command-line arguments.
• Ensures that the application restarts even if event handlers attempt to prevent closing.

The Application.Restart() call initiates the exit process and starts a new instance, while Environment.Exit(0) terminates the current process immediately, preventing event handlers from interfering. A brief period of overlap exists during which both processes run, but this duality is typically not problematic.

Additionally, the exit code 0 indicates a clean shutdown. You can specify 1 to signal an error if desired.

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