This repository is the home for the .NET Core Template Engine. It contains the brains for dotnet new.When dotnet new is invoked, it will call the Template Engine to create the artifacts on disk.Template Engine is a library for manipulating streams, including operations to replace values, include/excluderegions and process if, else if, else and end if style statements.

We have created a dotnet template samples repo, which shows how you can usethe Template Engine to create new templates. The samples are setup to be stand alone for specific examples. If you are in need of a sample, and it doesn't exist please create an issue in the samples repo.

You can create new projects with dotnet new, this section will briefly describe that. For more info take a look atAnnouncing .NET Core Tools Updates in VS 2017 RC.

To get started let's find out what options we have by executing dotnet new --help. The result is pasted in the block below.

Let's create a new project named 'MyAwesomeProject' in the 'src/MyProject' directory. This project should be an ASP.NET MVC project with Individual Auth. To create that templateexecute dotnet new mvc -n MyAwesomeProject -o src/MyProject -au Individual. Let's try that now, the result is below.

The project was successfully created on disk as expected in src/MyProject. From here, we can run normal dotnet commands like dotnet restore and dotnet build.

We are getting started on the integration with Visual Studio now. The idea behind creating the Template Engine is that we can plug the templates into different places like: dotnet new, Visual Studio, Visual Studio for Mac, yo aspnet, etc. With support for ASP.NET Core in Visual Studio for Mac, you are empowered to create beautiful, modern web applications. Craft the front-end with the same web editor experience you know and love from Visual Studio and Windows and publish to the cloud directly from the IDE. I am learning Monogame, I had Xamarin, but since Microsoft release Visual Studio for MAC, I uninstalled Xamarin and install Visual Studio for MAC, I try to install Monogame, but Visual Studio does not show ant Monogame Project Template.

We have a pretty good help system built in, including template specific help (for example dotnet new mvc --help). If you're not sure the syntax please try that,if you have any difficulties please file a new issue.

Now that we've covered the basics of using dotnew new, lets move on to info for template authors and contributors.

You can install additional templates that can be used by dotnet new. See Available templates for dotnet new.

The instructions below enable a new command at the dotnet CLI, dotnet new3, that uses the bits and templates contained in this repo. Think of it as a 'preview' version of dotnet new for trying out new switches, interactions and display styles before rolling them in to the product.

Commands executed against dotnet new3 won't impact the behavior of dotnet new, Visual Studio for Mac, Visual Studio, nor any other environment.

If you're authoring templates, or interested in contributing to this repo, then you're likely interested in how to use the latest version of this experience.The steps required are outlined below.

Aquire

• Fork this repository.
• Clone the forked repository to your local machine.
  • master is a build branch and does not accept contributions directly.
  • The default branch is the active development branch that accepts contributions and flows to master to produce packages.

Build & Run

• Open up a command prompt and navigation to the root of your source code.
• Run the setup script appropriate your environment.
  • Windows:setup.cmd
  • Mac/Linux: setup.sh
• When running the setup script, the existing built-in command dotnet new will be preserved. A new command dotnet new3 will be enabled which allows you to createfiles with the latest Template Engine.
• That's it! Now you can run dotnet new3.

For example, here is the result of running dotnet new3 --help on a Mac (truncated to save space here).

Template NuGet Packages

• The build the that produces the template NuGet packages currently has a dependency on nuget.exe.
  • Because of this, those that wish to install using the template NuGet packages will need to be on Windows in order to produce the appropriate assets.

Debugging

Debugging code requires your current dotnet new3 session to have its active build session configured to DEBUG, and a debugger from your application of choice to be attached to the current running dotnet new3 process. The steps required to accomplish this are outlined below.

Notes

• When working with the source inside Visual Studio, it is recommended you use the latest available version.

Setup

• Open the Microsoft.Templating.sln solution in the application you will use to attach your debugger.
  • This solution contains the projects needed to run, modify & debug the Template Engine.
• Once your solution is loaded, open up a new command prompt and navigate to the root of your repository.
• Execute the dn3buildmode-debug.cmd script.
  • This will set your dotnet new3 build to a DEBUG mode.
• Run the 'setup' script to build a new dotnet new3 session.

Execution

Once 'setup' has completed successfully, run the following command.

By supplying the --debug:attach argument with any other argument(s) you are running, you are triggering a Console.ReadLine(); request which pauses execution of the Template Engine at an early point in its execution.

Once the engine is 'paused', you have the opportunity to attach a debugger to the running dotnet new3 process.

In the application you are using to attach a debugger...

• Open the Microsoft.TemplateEngine.Cli.New3Command class and locate the following function.
  • New3Command.Run()
• Set a breakpoint at any point after the following block of code.

• Attach the debugger to the current running 'dotnet new 3' process.
• For example, if you are using Visual Studio you can perform the following.
  • Execute the keyboard shortcut - ctrl + alt + p.
  • This will open up a dialog that allows you to search for the dotnet-new3.exe process.
  • Locate the desired process, select it and hit the Attach button.

Now that you have a debug session attached to your properly configured dotnet new3 process, head back to the command line and hit enter. This will trigger Console.Readline() to execute and your proceeding breakpoint to be hit inside the application you are using to debug.

Templates can be installed from packages in any NuGet feed, directories on the file system or ZIP type archives (zip, nupkg, vsix, etc.)To install a new template use the command:

Showing help

Listing templates

Template parameter help

Template creation

Visual Studio For Mac Wikipedia

• Create formal docs
• Interactive mode (i.e. interactive prompts similar to yo aspnet
• Integration with Visual Studio One ASP.NET dialog
• Integration with Visual Studio for Mac for .NET Core projects
• Integration with yo aspnet
• Template updates (both required and optional)
• Visual Studio wizard to enable community members to plug into VS as well
• Maybe: Visual Studio wizard which can display templates given a feed URL
• Suggestions welcome, please file an issue

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