问题
I scratched my head over this one for a few hours. I followed Microsoft's tutorial on adding API documentation. That all worked as expected on my local machine, but when published to my production IIS server, I got an error saying the XmlDocument.xml could not be found.
回答1:
Although enabling the "XML documentation file" checkbox in the project properties > build > output section does create the file, it does not add it to the project for some reason. That's why the App_Data folder in my solution explorer was empty.
The solution is simple. Right-click on the App_Data folder and select the add existing item option. Select the generated XML documentation file in the "App_Data" folder of your project's build location. Publish again.
I hope someone can find this useful.
来源：https://stackoverflow.com/questions/62155966/xml-documentation-not-found-when-publishing-a-net-framework-web-api