.NET Core cross-platform application development practice: a seamless journey from Windows to Linux and macOS

With the launch of .NET Core, .NET developers have a new opportunity to easily write and run .NET applications on multiple operating systems. This article will delve into how to use .NET Core to achieve cross-platform application development, and share best practice experiences on operating systems such as Windows, Linux, and macOS.

1. Prepare the development environment

To start cross-platform application development, you first need to prepare a development environment for each target platform.

Windows

On Windows, you can install the .NET Core SDK through Visual Studio. Once installed, you can create and run .NET Core projects through Visual Studio.

Linux

On Linux, you can use a package manager (such as apt-get, yum or dnf) to install the .NET Core SDK. For example, on Ubuntu you can run the following command to install:

sudo apt-get update
sudo apt-get install -y dotnet-sdk-3.1

macOS

You can install .NET Core SDK through Homebrew on macOS:

brew update
brew install dotnet-sdk

2. Create cross-platform applications

Next, we will create a new console application using the .NET Core CLI.

dotnet new console -o MyCrossPlatformApp
cd MyCrossPlatformApp

This command will create a new console application and enter the application directory.

3. Write code

Now, you can start writing code. Here is a simple example that demonstrates how to output "Hello, World!" in a console application:

using System;

namespace MyCrossPlatformApp
{
class Program
{
static void Main(string[] args)
{
Console.WriteLine("Hello, World!");
}
}
}

4. Cross-platform construction and operation

Windows

On Windows, you can build and run the project directly through Visual Studio, or use the command line:

dotnet run

Linux

In a Linux terminal, navigate to the project directory and run:

dotnet run

macOS

On macOS, also navigate to the project directory in the terminal and run:

dotnet run

5. Best practices for cross-platform development

Use relative paths: In cross-platform applications, try to use relative paths instead of absolute paths, because the file path formats of different operating systems may be different.

Avoid hardcoding platform-specific code: Try not to hardcode platform-specific logic in your code. You can use conditional compilation or feature detection to write portable code.

Testing for cross-platform compatibility: Fully tested on each target platform to ensure that the application works properly on different operating systems.

Utilize containerization technology: Using containerization technology such as Docker can help you ensure the consistency of your application in different environments.

Keep an eye on the latest .NET Core version: As .NET Core continues to develop, new versions will bring performance improvements and new features, and timely upgrades can keep applications competitive.

6. Summary

By following the above steps and best practices, you can easily use .NET Core for cross-platform application development and publish and run your applications on different operating systems such as Windows, Linux, and macOS. The cross-platform capabilities of .NET Core enable developers to build and maintain multi-platform applications more flexibly, meeting the needs of modern software development for efficiency, flexibility and portability.

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