Lesson 66 - Package Management with NuGet

Tutorial Series: Free C# Fundamentals via ASP.NET Web Apps

Previous Article  |  Next Article

In this lesson, we're going to talk about NuGet, which is a Package Manager built into Visual Studio. The term “package” refers to any third-party library that you can import – and use to build applications – in your code. Package Managers can help you find, and manage, a plethora of freely available, open source projects that provide core functionality for your application. For example, why go off and build logging functionality when there are several good, open source logging utilities already available out there? You just need to download them, add them to your project, create a reference, and now you can use them inside of your project as if they were code that you’ve written yourself.

Step 1: Understanding What a Package Manager Does

  1. Installs files necessary to include a third party library/resource into your project.

  2. Adds references to the class library files in your project.

  3. Adds any dependencies, including other packages, that the target class library requires.

  4. Updates the package, and its dependencies, to the latest version.

NuGet is a package manager that can run from command-line (for those used to using that kind of interface), as well as from a dialog in Visual Studio. You can browse, and download, available packages directly within Visual Studio, or download them from your web browser by going to:


Step 2: Using The Package Manager

To begin, create a new ASP.NET Web Forms application called NuGetExample, and add a Default.aspx page to the project. Navigate to the dialog utility for NuGet located at:

Tools > NuGet Package Manager > Manage NuGet Packages for Solution

Locate the latest version of “Bootstrap” from NuGet.org and install it into your project:


Bootstrap is a popular “mobile-first” Framework developed, and made openly available, by Twitter. It’s a package made up of mostly pre-written CSS and Javascript that you can reference in your web pages to employ a “responsive” grid-like format that adapts to the viewport of large and small devices alike.


Make sure you search for the package source through “nuget.org,” and click OK to finish the process:


Once it successfully installs to your project you will see a green checkmark beside it in your package manager, while an update arrow might be visible to show an update is available for a related dependency:


Go ahead and update JQuery to the latest version:


You can view dependencies by clicking on the package in the Package Manager. The dependencies section should display at the bottom of the page. Here the Bootstrap package shows a dependency on JQuery, including the version required:


The JQuery package, on the other hand, has no dependencies:


Step 3: Review the Package in the Solution Explorer

You will also see the added package references in the Solution Explorer:


These package files and folders break down as follows:

  • “Content” contains the core CSS files for Bootstrap.

  • “fonts” contains common icons for resized mobile menu elements.

  • “Scripts” contains Javascript/JQuery for handling browser-side behaviors.

  • “packages.config” contains references to these packages within an XML configuration file.


Step 4: Using the Package Manager Console**

Some may prefer using the Package Manger Console as another way of finding and installing packages. You get to this Console by selecting from the Visual Studio menu:

Tools > NuGet Package Manger > Package Manager Console

You can find a list of commands at: https://docs.nuget.org/consume/command-line-reference

You can also type in “get-help nuget” in the command line to get a list of commands;


Use the “Install-Package” command to install the popular logging utility called “Elmah”, a popular logging tool:


You should then see a list of actions indicating a successful install:


If you run the “Update-Package” command you may, or may not, see available updates:


Note that you can find the installed packages in the project folder under “packages”:


Related Articles in this Tutorial:

Lesson 1 - Series Introduction

Lesson 2 - Installing Visual Studio 2015

Lesson 3 - Building Your First Web App

Lesson 4 - Understanding What You Just Did

Lesson 5 - Working with Projects in Visual Studio

Lesson 6 - Simple Web Page Formatting in Visual Studio

Challenge 1

Solution 1

Lesson 7 - Variables and Data Types

Lesson 8 - Data Type Conversion

Lesson 9 - Arithmetic Operators

Lesson 10 - C# Syntax Basics

Challenge 2 - ChallengeSimpleCalculator

Solution - ChallengeSimpleCalculator

Lesson 11 - Conditional If Statements

Lesson 12 - The Conditional Ternary Operator

Challenge 3 - ChallengeConditionalRadioButton

Solution - Challenge Conditional RadioButton

Lesson 13 - Comparison and Logical Operators

Lesson 13 Challenge - First Papa Bob's Website

Solution - Challenge First Papa Bob's Website

Lesson 14 - Working with Dates and Times

Lesson 15 - Working With Spans of Time

Lesson 16 - Working with the Calendar Server Control

Challenge 4 - Challenge Days Between Dates

Solution - Challenge Days Between Dates

Lesson 17 - Page_Load and Page.IsPostBack

Lesson 18 - Setting a Break Point and Debugging

Lesson 19 - Formatting Strings

Challenge 5 - Challenge Epic Spies Assignment

Solution - Challenge Epic Spies Assignment

Lesson 20 - Maintaining State with ViewState

Lesson 21 - Storing Values in Arrays

Lesson 22 - Understanding Multidimensional Arrays

Lesson 23 - Changing the Length of an Array

Challenge 6 - Challenge Epic Spies Asset Tracker

Solution - Challenge Epic Spies Asset Tracker

Lesson 24 - Understanding Variable Scope

Lesson 25 - Code Blocks and Nested If Statements

Lesson 26 - Looping with the For Iteration Statement

Challenge 7 - Challenge For Xmen Battle Count

Solution - Challenge For Xmen Battle Count

Lesson 27 - Looping with the while() & do...while() Iteration Statements

Lesson 28 - Creating and Calling Simple Helper Methods

Lesson 29 - Creating Methods with Input Parameters

Lesson 30 - Returning Values from Methods

Lesson 31 - Creating Overloaded Methods

Lesson 32 - Creating Optional Parameters

Lesson 33 - Creating Names Parameters

Lesson 34 - Creating Methods with Output Parameters

Challenge 8 - Challenge Postal Calculator Helper Methods

Solution - Challenge Postal Calculator Helper Methods

Mega Challenge Casino

Solution - Mega Challenge Casino

Lesson 35 - Manipulating Strings

Challenge 9 - Phun With Strings

Solution - Challenge Phun With Strings

Lesson 36 - Introduction to Classes and Objects

Challenge - Hero Monster Classes Part 1

Solution - Hero Monster Classes Part 1

Challenge - Hero Monster Classes Part 2

Solution - Challenge Hero Monster Classes Part 2

Lesson 37 - Creating Class Files Creating Cohesive Classes and Code Navigation

Lesson 38 - Understanding Object References and Object Lifetime

Lesson 39 - Understanding the .NET Framework and Compilation

Lesson 40 - Namespaces and Using Directives

Lesson 41 - Creating Class Libraries and Adding References to Assemblies

Lesson 42 - Accessibility Modifiers, Fields and Properties

Lesson 43 - Creating Constructor Methods

Lesson 44 - Naming Conventions for Identifiers

Lesson 45 - Static vs Instance Members

Challenge 10 - Challenge Simple Darts

Solution - Challenge Simple Darts

Lesson 46 - Working with the List Collection

Lesson 47 - Object Initializers

Lesson 48 - Collection Initializers

Lesson 49 - Working with the Dictionary Collection

Lesson 50 - Looping with the foreach Iteration Statement

Lesson 51 - Implicitly-Typed Variables with the var Keyword

Challenge 11 - Challenge Student Courses

Solution - Challenge Student Courses

Mega Challenge War

Solution - Mega Challenge War

Lesson 52 - Creating GUIDs

Lesson 53 - Working with Enumerations

Lesson 54 - Understanding the switch() Statement

Lesson 55 - First Pass at the Separation of Concerns Principle

Lesson 56 - Understanding Exception Handling

Lesson 57 - Understanding Global Exception Handling

Lesson 58 - Understanding Custom Exceptions

Lesson 59 - Creating a Database in Visual Studio

Lesson 60 - Creating an Entity Data Model

Lesson 61 - Displaying the DbSet Result in an ASP.NET GridView

Lesson 62 - Implementing a Button Command in a GridView

Lesson 63 - Using a Tools-Centric Approach to Building a Database Application

Lesson 64 - Using a Maintenance-Driven Approach to Building a Database Application

Lesson 65 - Creating a New Instance of an Entity and Persisting it to the Database

Lesson 66 - Package Management with NuGet

Lesson 67 - NuGet No-Commit Workflow

Lesson 68 - Introduction the Twitter Bootstrap CSS Framework

Lesson 69 - Mapping Enum Types to Entity Properties in the Framework Designer

Lesson 70 - Deploying the App to Microsoft Azure Web Services Web Apps

Papa Bob's Mega Challenge

Papa Bob's Mega Solution Part 1 - Setting up the Solution

Papa Bob's Mega Solution Part 2 - Adding an Order to the Database

Papa Bob's Mega Solution Part 3 - Passing an Order from the Presentation Layer

Papa Bob's Mega Solution Part 4 - Creating the Order Form

Papa Bob's Mega Solution Part 5 - Adding Enums

Papa Bob's Mega Solution Part 6 - Creating an Order with Validation

Papa Bob's Mega Solution Part 7 - Calculating the Order Price

Papa Bob's Mega Solution Part 8 - Displaying the Price to the User

Papa Bob's Mega Solution Part 9 - Creating the Order Management Page


Please login or register to add a comment