How to use ConditionalAttribute

 

Hello, today I will show you how to use ConditionalAttribute from .NET.

Let’s say you want execute some method in when DEBUG compilation symbol is defined (i.e. in development only). Here is a snipped of code which allows you to achieve this:

    class Program
    {
        static void Main(string[] args)
        {
            TraceData();
            DoSomeWork();
        }

        [Conditional("DEBUG")]
        private static void TraceData()
        {
            Console.WriteLine("Some debugging info");
        }

        private static void DoSomeWork()
        {
            Console.WriteLine("Some production code..");
        }
    }

In addition, here is “Build” tab from “Project properties” window:

If you uncheck “Define DEBUG constant” and execute app, you will get the following output:

As you can see, TraceData method didn’t execute. Hope you will find places to use this attribute in your own projects.