How to stop evaluation of parameters in calls to debug functions when in Release build (C#)

Question

I have some code which is littered with debug expressions similar to:

System.Diagnostics.Debug.WriteLine(System.BitConverter.ToString(data.Take(32).ToArray()));

What can I do to prevent the Release version evaluating System.BitConverter.ToString(data.Take(32).ToArray())?

I have added my own debug class that allows me to control calls to WriteLine() based on the level of reporting I want but both methods evaluate the Linq and string conversion even in Release mode (don't they)?

---ADDED LATER---

As I said above there are many of these lines in the code and I don't particularly want to #if DEBUG them all out.

What I want is to know how to avoid evaluating the Linq and the BitConverter, which I assume will be a performance hit, in Release mode.

Answer 1

You do not have to do anything! The evaluation of the parameters passed to a method that is removed because of the ConditionalAttribute is suppressed already.

See the section The Conditional attribute in the C# Language Specification for authoritative documentation. Quote:

[...] the call (including evaluation of the parameters of the call) is omitted.

To see that the method actually carries the ConditionalAttribute, see Debug.WriteLine(string) documentation.