Adding the Bootstrap 4 files using Bower

With ASP.NET 5 and Visual Studio 2015, Microsoft provided the ability to use Bower as a client-side package manager. Bower is a package manager for web frameworks and libraries that is already very popular in the web development community.

Note

You can read more about Bower and search the packages it provides by visiting http://bower.io/.

Microsoft's decision to allow the use of Bower and package managers other than NuGet for client-side dependencies is because it already has such a rich ecosystem.

Note

Do not fear! NuGet is not going away. You can still use NuGet to install libraries and components, including Bootstrap 4!

To add the Bootstrap 4 source files to your project, you need to follow these steps:

1. Right-click on the project name inside Visual Studio's Solution Explorer and select Add | New Item....
2. Under .NET Core | Client-side, select the Bower Configuration File item, make sure the filename is bower.json and click on Add, as shown here:
   
3. If not already open, double-click on the bower.json file to open it and add Bootstrap 4 to the dependencies array. The code for the file should look similar to the following:

           { 
              "name": "asp.net", 
              "private": true, 
              "dependencies": { 
              "bootstrap": "v4.0.0-alpha.3" 
              } 
           }  
   

4. Save the bower.json file.
5. Once you've saved the bower.json file, Visual Studio will automatically download the dependencies into the wwwroot/lib folder of your project. In the case of Bootstrap 4 it also depends on jQuery and Tether. You'll notice that jQuery and Tether has also been downloaded as part of the Bootstrap dependency.
6. After you've added Bootstrap to your project, your project layout should look similar to the following screenshot: