How to enable transformations on build with Visual Studio

Enable-Transformations.md

#Transform web.config on build

1. Unload the project
2. Edit .csproj
3. Append figure 1 to the end of the file just before </Project>; v12.0 might change depending on your version of Visual Studio
4. Save .csproj and reload
5. Open configuration manager
6. Add a new Configuration Name: Base. Copy settings from: Release
7. Copy the contents of your web.config
8. Right click Web.Config > Add Config Transformation
9. Overwrite the web.base.config with the contents of your clipboard
10. From now on Web.Config will be overwritten using transformations.

For settings that apply to all cofigurations use Base
For settings that apply only to Release use Release
For settings that apply only to Debug use Debug

A helpful note to add to your projects [base|debug|release].config

<!-- WEB CONFIG IN THIS PROJECT SHOULD ONLY BE MODIFIED BY -->
<!-- web.base.config -->
<!-- web.debug.config -->
<!-- web.release.config -->
<!-- CHANGES MADE DIRECTLY TO THE web.config WILL BE OVERWRITTEN -->

####Figure 1 Copy and paste:

<Import Project="$(MSBuildExtensionsPath32)\Microsoft\VisualStudio\v12.0\WebApplications\Microsoft.WebApplication.targets" />
<Target Name="BeforeBuild">
    <TransformXml Source="Web.Base.config" Transform="Web.$(Configuration).config" Destination="Web.config" />
</Target>     

Thank you for this update. Does this also work for dotnet core projects?

I did all the above steps but my final output in the web.config is always Web.Base.config while doing continuous delivery using TFS 2018.
Please help me in this regard. I should be able to transform the web.config file which i have selected in the configuration in Visual studio IDE. The final output should be the selected web.config file.

Hey ravnan and whindes. Sorry for the late answer. Please place your question in the main gist: https://gist.github.com/EdCharbeneau/9135216 . I just made a small orthography correction to it :), that's why I forked the gist. I'm sorry for not being able to help you. Good luck!

Doesn't work in VS 2019 output stays what's in Web.config file