Create .NET Core Web API (C#) In MonoDevelop On Ubuntu 18.04

One of the main advantages of using .NET Core Web API is the speed in transaction processing. In this tutorial, we will execute a .NET Core Web API 2.2 application using MonoDevelop as an IDE on Ubuntu 18.04.

Introduction

In this article, let us see how to install Mono Framework, MonoDevelop, and use it with .NET Core, by creating a new project (Web API) in MonoDevelop.

Step 1 - Installing Mono Framework

 

In Ubuntu, open the CMD and run the following command.

sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys 3FA7E0328081BFF6A14DA29AA6A19B38D3D831EF
echo "deb https://download.mono-project.com/repo/ubuntu stable-bionic main" | sudo tee /etc/apt/sources.list.d/mono-official-stable.list
sudo apt update
sudo apt install mono-devel
mono --version

This command will return the Mono 5.18 version details that confirm that the framework has been installed. (Now, you can build C# apps on Linux (GTK#, ASP.NET Web Forms, ASP.NET Web Services, Console Applications, etc).

Step 2 - Installing MonoDevelop (IDE)

 

Open the CMD and run the following command

sudo apt install apt-transport-https dirmngr
sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys 3FA7E0328081BFF6A14DA29AA6A19B38D3D831EF
echo "deb https://download.mono-project.com/repo/ubuntu vs-bionic main" | sudo tee /etc/apt/sources.list.d/mono-official-vs.list
sudo apt update
sudo apt-get install monodevelop

Now, you can build C# Apps using MonoDevelop IDE on Ubuntu 18.04.

Step 3 - Installing .NET Core 2.2

Open the CMD and run the following command

wget -q https://packages.microsoft.com/config/ubuntu/18.04/packages-microsoft-prod.deb
sudo dpkg -i packages-microsoft-prod.deb
sudo add-apt-repository universe
sudo apt-get install apt-transport-https
sudo apt-get update
sudo apt-get install dotnet-sdk-2.2
dotnet –version

This command will return the .NET Core 2.2 version details that confirm that the tool has been installed.

Now, you can build the first .NET Core 2.2 Web API in MonoDevelop on Ubuntu 18.04. Open MonoDevelop IDE in the Ubuntu Apps Dashboard.

Step 4 - Create .NET Core Web API in MonoDevelop

First, click and create a new Project.

 

Now, select “ASP.NET Core Web API” and click the "Next" button.

 

Put some names in the required fields and click "Create".

 

You can see a .NET Core Web API tree solution.

 

Select Program.cs and add the following code.

 

Double-click the solution name, that will open Options window. Select Run -> Default Option and put the following port number.

 

Done. Now, run the program and check it in a web browser. The .NET Core Web API is ready.

 

 

Summary

This tutorial showed how to install and create a .NET Core Web API 2.2 in MonoDevelop on Ubuntu 18.04.