Manage packages in dotnet applications

dotnet_packages

By using packages, third party logic can be used in dotnet applications

Packages declaration in csproj file

  • The external packages used by a project are declared in its csproj file like the following

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  • The packages will be downloaded and linked as per the csproj package references during the restore or build process

Browse Nuget packages online

Nuget packages can searched online at https://www.nuget.org/PACKAGES

https://github.com/nagasudhirpulla/tamingdotnet/blob/main/nuget site.png?raw=true

Manage packages from dotnet cli

Install / update a package

command - dotnet add <PROJECT_FOLDER> package <PACKAGE_NAME> -v <VERSION>

  • The following command adds/updates a package in a project. If the package is already present, it will be updated to the latest version
dotnet add package Microsoft.Data.Sqlite
  • Install a specific version using -v flag like the following
dotnet add package Microsoft.Data.Sqlite -v 8.0.10

List all packages in a project

command - dotnet list <PROJECT_FOLDER> package

Example:

dotnet list package

Remove a package

command - dotnet remove <PROJECT_FOLDER> package <PACKAGE_NAME>

Example:

dotnet remove package Microsoft.Data.Sqlite

Downloaded Packages folder location

The packages will be downloaded and kept in the global packages folder. The folder location is as follows

  • Windows: %userprofile%\.nuget\packages
  • Mac/Linux: ~/.nuget/packages

Manage packages in VS code

  • In the solution explorer, right click on the project and select “Add Nuget Package”

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  • Manage packages from “Packages” section of the “Dependencies” section

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Manage packages in Visual Studio

To manage packages in Visual Studio, right click on a project and click “Manage Nuget Packages”

Install a package

  • Go to the browse tab of Nuget Package Manager. Search and install the required packages

image.png

Update a package

In the “Installed” tab of the package manager, select the package and change the version as required

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Remove a package

In the “Installed” tab of the package manager, select the package and uninstall it

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Download packages for offline installation

Method 1 - Download packages from nuget.org

  • Search for the required package in nuget.org and download the .npkg file as shown below

image.png

  • The dependent packages are also to be manually downloaded. Hence this approach is more tedious

Method 2 - Download required packages with dotnet CLI

  • In a machine that has access to internet, create a dotnet project with required dependencies and download the packages to a desired folder.
  • For example, create a new console app with required packages with the following commands
dotnet new console

dotnet add package Microsoft.Data.Sqlite

dotnet add package Microsoft.Identity.Client
  • Download the packages to a folder named Packages using the following command
dotnet restore --packages .\Packages

Install packages from a folder

In a machine without internet, the following methods can be used to install packages from a local folder

Method 1 - Using dotnet CLI

  • Keep the downloaded packages in a folder, say “Packages”
  • Open a command prompt in a folder of the solution or project and run the following command to install packages (declared in csproj file) from the folder “Packages”
dotnet restore -s .\Packages
  • If the package to be installed is not present in the .csproj file, explicitly install the package from the folder “Packages” using the following command
dotnet add package Microsoft.Data.Sqlite -s .\Packages\

Method 2 - Using Visual Studio Nuget Package Manager

  • Open the Nuget Package Manager for the project and add the “Packages” folder as a new package source as shown below

image.png

  • Add adding the package source, select the folder as a package source in Nuget Package Manager and install the required packages from the folder

Video

The video tutorial for this post can be found here

References

Location: Mumbai, Maharashtra, India

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