So if you are like most people I talked to who are professional developers, you might have heard of System.Diagnostics.Debug, but you certainly do not make a habit of using it every day.  While this powerful object has many excellent methods, this article with focus on seven key methods, Assert, Write, WriteLine, WriteIf, WriteLineIf, Indent, Unindent, which you should be using every day in nearly every piece of code you write.