Writing Debug and Trace Messages :: BlackWasp Software Development: "Debug messages are created using the Debug class in the System.Diagnostics namespace. By default, when using the debugger within Visual Studio, these messages are displayed in the Output window if running software in debug mode. However, listeners can be added that write messages to other locations, such as text files. The methods used to generate the messages are decorated with the Condition attribute and the DEBUG symbol, so are not called when the program is compiled in release mode. This ensures that debug messages are not seen by the end-user and do not cause any performance impact.
Trace messages are written using the Trace class in the same namespace. They are different to Debug messages because they are included in the code when the TRACE symbol is defined, as it is by default for Visual Studio users. Trace messages can exist in code that has been compiled in either debug or release mode. They are useful when you do wish to log information from the software that you distribute to end-users."
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