How to create setup.exe file for window form application in visual studio 2019?

Using Visual Studio Installer (look @Hans Passant comment for the download).

I will make a simple tutorial:

1 - Right click on Solution of your project > Add > New Project > Write on SearchBar "Setup" > Setup Project > Next > Create;

2 - Application Folder > Add > Project Output > Primary Output;

3 - User's Desktop > Create New Shortcut to Primary Output;

4 - Rename your Shortcut for the name of your App;

5 - User's Program Menu > Create New Shortcut to Primary Output;

6 - Rename your Shortcut for the name of your App;

7 - Application Folder > Add all the files needed for the operation of the application.

Good points:

• Don't forget to put the icons on your application folder.
• When you edit your application you have to build your setup or the setup will be with the previous "version".
• Don't forget to edit the properties of setup (Who created the application, version...).

You must be install "Microsoft Visual Studio Installer Projects" extension from visual studio extensions menu. This process need after Visual Studio 2017.

Extension link: https://marketplace.visualstudio.com/items?itemName=VisualStudioClient.MicrosoftVisualStudio2017InstallerProjects

On visual Studio 2019,

Go to Extensions > Manage Extensions > Online > Search, find, download, and install "Microsoft Visual Studio Installer Projects" extension.