You are developing a Windows application by using Microsoft .NET Framework 4. You plan to design a diagnostic logging strategy that will be used in a production environment. You need to ensure that…

You are developing a Windows application by using Microsoft .NET Framework 4. You plan to design a diagnostic logging strategy that will be used in a production environment. You need to ensure that the strategy meets the following requirements:

• Enables or disables diagnostic messages by using an application

configuration option.

• Changes the level of detail in the diagnostic messages without

recompiling the application. Which class should you use?