Open VS Code and select the Extensions button in VS Code's Activity Bar to the left. Type C# in the search bar, select C# Dev Kit, and then select the Install button on the C# Dev Kit extension page.
In your terminal, run the following command to check your installation.
Terminal
dotnet
If the installation succeeded, you should see an output similar to the following:
Terminal
Usage: dotnet [options]Usage: dotnet [path-to-application]Options:-h|--help Display help.--info Display .NET information.--list-sdks Display the installed SDKs.--list-runtimes Display the installed runtimes.path-to-application:The path to an application .dll file to execute.
If everything looks good, select the Continue button below to go to the next step.
Got an error?
If you receive a 'dotnet' is not recognized as an internal or external command error, make sure you opened a new VS Code terminal. If restarting VS Code or restarting your machine doesn't resolve the issue, use the I ran into an issue button to get help fixing the problem.
Create your app
按 CTRL+SHIFT+P，在 VS Code 中打开命令面板。
按 CMD+SHIFT+P，在 VS Code 中打开命令面板。
Type .NET: to see the commands you can run with C# Dev Kit!
Find and select .NET: New Project to create a new .NET project.
Scroll down and select Console App.
Choose the folder location you'd like to save your project.
出现提示时，在命令面板中将项目命名为 MyConsoleApp。
选中复选框并选择是，我信任作者以启用工作区信任。
If you have a Visual Studio Subscription, sign into your account. If you do not see a prompt pop up, click on the C# icon in VS Code's Status Bar towards the bottom right of your window.
The main file in the MyConsoleApp folder is called Program.cs. By default, it already contains the necessary code to write Hello, World! to the terminal. Click on the file to see the code created by the template:
Select the Continue button below to go to the next step.
Got an error?
If you can't resolve the issue you're having, select the I ran into an issue button below to get help fixing the problem.
Run your app
To run your application, select the dropdown menu to the right of the run button in the top right, and select Run project associated with this file.
You should see Hello, World! in your VS Code terminal.
Terminal
Hello, World!
Congratulations, you've built and run your first .NET app! Select the Continue button below to go to the next step.
Edit your code
In the Program.cs file, add the highlighted line after the code that prints Hello, World!, like the following:
Program.cs
// See https://aka.ms/new-console-template for more informationConsole.WriteLine("Hello, World!");Console.WriteLine("The current time is " + DateTime.Now);
Save the Program.cs file and select Run project associated with the file again. If you succeed, you should see an output similar to the following:
Terminal
Hello, World!
The current time is 2024/10/14 上午10:46:59
Next steps
Congratulations, you've built and run your first .NET app!
Keep learning
To keep learning general .NET skills, try our tutorials on Microsoft Learn where you'll learn about .NET, dependencies, working with files, debugging, and more:
C# is .NET's modern, innovative, open-source programming language for building all your apps. Get started by trying our C# interactive tutorials on Microsoft Learn:
