Including XML Documentation with C# DLLs in Unity

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In Visual Studio's Solution Explorer,

right-click on the project.

A menu will appear at the bottom with the Properties option. Click it.

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A window like this will appear. Click on it, and:

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Navigate to the Build tab.

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Check the XML documentation file checkbox.

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When you build, you'll see that the XML documentation with summary tags is generated alongside the DLL.

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You can see that both the DLL and XML are built as separate files.

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Place both files in the Assets > Plugins folder.

If the Plugins folder doesn't exist, create one. I created an additional BTAI folder to keep things organized. The key point is that the files must be under Assets > Plugins. You can create additional subfolders inside it.

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Once you place both files and start using them:

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You can confirm that the XML documentation written for the DLL is now displayed alongside the code.

References:

How to include documentation in DLL to show method summary in Unity3D

C# 10.5 XML Documentation Files - Always Holiday