How do I set a system-wide _ifdef?

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How do I set a system-wide _ifdef?

This is using Microsoft Visual Stuedio version 2019 with C#.

If I want to add specialized code to a project shared by multiple software developers that is designed for my selfish tests and evaluation, how do I manage a # definition inside the C# code?

I imagine some soft of solution varable that is deined in either the project file or the solution file that I do not merge with the master branch of the code in the version contorl system. And then this "# define" is somehow blocked out in the source file.

Has anyone experienced or used such a thing?

What I have tried:

I have gotten a good night's sleep.
I have had a good breakfast and drank plenty of fluids.
I am not going to try anything because I mighht break something.

Posted 21-Feb-22 5:58am

Xarzu

Updated 21-Feb-22 6:24am

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Richard MacCutchan · Answer 1 · 2022-02-21T06:19:00

Solution 1

I am not sure I understand the question but C# preprocessor directives | Microsoft Docs[^] describes how to use the #if directive.

Posted 21-Feb-22 6:19am

Richard MacCutchan

OriginalGriff · Answer 2 · 2022-02-21T06:24:00

You can define a variable on a "per project" basis as part of the project "Properties ... Build" tab. Just add your symbols to the "Conditional compilation symbols" text box.

Then just add your conditional directives:

#if _XYZZY
            MessageBox.Show("Defined");
#else
            MessageBox.Show("Not Defined");
#endif