Getting started with DotNet Core

I wanted to get started with Machine Learning, but rather than using Tensorflow, I wanted to take a different approach and use ML.NET. Now you might ask yourself: “Why use .NET if you have something such as Tensorflow in Python?”. Well, my preference goes towards languages containing brackets (C#, JS, …) rather than having pure identations (Python), making me want to try .NET Core for this.

To summarize my setup that I am working on for this article, it looks something like this:

  • Ubuntu WSL (use wslconfig.exe /l to view your distros, use do-dist-upgrade to upgrade your distro)
  • VSCode

Installing .NET Core on Ubuntu WSL

Since I am a fan of the WSL, I prefer to do everything in WSL rather than in windows. Why? It’s just easier to use Linux commands most of the time, and seeing that I am coming from a Node world, I am used to it.

Let’s get started installing .NET Core. This is quite easy, seeing that we just have to follow the original guide written by the Microsoft team (see references).

# Register Microsoft key & Feed
wget -q packages-microsoft-prod.deb https://packages.microsoft.com/config/ubuntu/16.04/packages-microsoft-prod.deb
sudo dpkg -i packages-microsoft-prod.deb

# Generic
sudo apt-get install -y apt-transport-https
sudo apt-get update

# Install dotnet core Runtime
sudo apt-get install -y dotnet-runtime-2.0.7

# Install dotnet core SDK
sudo apt-get install -y dotnet-sdk-2.1.200

Testing our installation and creating our first Hello World application

To test our installation, follow the commands below to create our first program

# Create a new console application project
# This will create our project file + dependencies to build the console app
# It also creates a Program.cs entry file
dotnet new console

# Download our NuGet packages
dotnet restore

# Run the application
dotnet run

We can also manually build and run our application, which gives us a faster execution time once it’s build. To do this, utilize the following steps:

# Build the application
dotnet build

# Navigate to our Output dir defined in bin/Debug/netcoreapp2.0/HelloWorld.dll
# Run the application
dotnet HelloWorld.dll

Whereafter we can now see the following output:

Hello World!

If you followed everything correctly, you should have something like this in your terminal:



Q: When installing, I get an error regarding unmet dependencies.

A: Run lsb_release -a and see your ubuntu version. Then check https://docs.microsoft.com/en-us/dotnet/core/linux-prerequisites?tabs=netcore2x for the installation commands for your version.



Xavier Geerinck

Xavier works as a Cloud Solution Architect at Microsoft, helping its customer unlock the full potential of the cloud. Even though he is still considered a young graduate, he achieved his first success at the age 16, by creating and selling his first startup. He then took this knowledge to create and help more startups in different markets such as technology, social media, philanthropy and home care. While in the meantime gaining more enterprise insights at renowned enterprises such as Nokia, Cisco and now Microsoft.

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