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PODetecting if a class/type is defined prior to compiling
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  1. PODetecting if a class/type is defined prior to compiling
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    copied!<p>This is similar to a few other threads i have found, but I haven't found the answer I need yet. I would appreciate a direct answer, even if it is "no, you can't do that".</p> <p>Is there a way to use one block of code if a class/type exists and another if it doesn't. The result would be the same as using preprocessor directives but without the need to #define and manually comment or un-comment something in a file.</p> <p>This may be a special use-case. I'm not sure. I'm working in an environment where sets of files can be installed, or not, before anything is compiled. So someone could buy a plugin which gets "installed" (files added to the project) which makes classes/types available for use (like extending an API). I need to provide a workaround if someone doesn't have one of our other plugin packages. I hope that makes sense. </p> <p>It just wouldn't be user-friendly to ask someone to open up one of our files, if they have another plug-in, to un-comment a preprocessor directive, unless we have to.</p> <p>e.g. I know this doesn't work because it only tests boolean if #define is used, but it illustrates what I am trying to do...</p> <pre class="lang-cs prettyprint-override"><code>#if SomeType SomeType.DoSomething(); #else DefaultWay.DoSomething(); </code></pre> <p><strong>EDIT: I added this as a C# feature suggestion. Please vote here: <a href="http://visualstudio.uservoice.com/forums/121579-visual-studio/suggestions/2297494-add-type-testing-as-preprocessor-directive" rel="nofollow">http://visualstudio.uservoice.com/forums/121579-visual-studio/suggestions/2297494-add-type-testing-as-preprocessor-directive</a></strong></p> <p>I don't see how reflection would be able to do this, but I am new to C#, so examples using relection, if it is possible, would be great.</p>
 

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