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Can I use Trace.WriteLine in release mode?
And what is the main difference between Trace.Write and Debug.Write?
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WriteLine(String) Writes a message to the trace listeners in the Listeners collection. WriteLine(Object, String) Writes a category name and the value of the object's ToString() method to the trace listeners in the Listeners collection.
Look at the "Output" Tab ( View | Output , or Ctrl + Alt + O ) in Visual Studio. If it's not outputting there, you need to add a listener. Check this documentation. Note: For most projects the compiler flag TRACE should be on by default in Visual Studio.
Tracing is a process about getting information regarding program's execution. On the other hand debugging is about finding errors in the code.
Release Mode: When we are going to production mode or deploying the application to the server. 2). Code optimization. Debug Mode: The debug mode code is not optimized. Release Mode: The release mode code is optimized.
Both are conditionally-compiled using the [Conditional] attribute.
If the TRACE flag is defined in the build, then calls to the Trace class will result in trace output being written. By default, TRACE is defined in both debug and release mode. If the flag is not defined, nothing will happen.
If the DEBUG flag is defined, then calls to the Debug class result in output being written to the debug stream. By default, DEBUG is only defined in debug mode.
The other major difference is that with tracing it's easy to customize the trace listeners and decide later on what you want to do with the trace output. It's more flexible than debug output, and generally better suited to logging in a production application.
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DEBUG:
RELEASE:
As you see the TRACE constant is enabled in both configs by default
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