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File-Based .NET apps

This workspace contains file-based .NET apps. These are standalone .cs files that can be run directly without creating a project file or traditional project structure.

Key Features

• No project file required - Run C# code directly from a .cs file
• Built-in CLI integration - Uses the standard dotnet CLI, no additional tools needed
• Scales to full projects - Can be converted to traditional project-based apps when needed
• Same C# language - Full C# language support, same compiler and runtime

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NBgv (Nerdbank.GitVersioning) Setup Prompt

Help me set up NBgv (Nerdbank.GitVersioning) for my repository following the pattern used in the NuGet Config Editor extension.

Project Context

I'm working on a VS Code extension and want to implement semantic versioning using NBgv with the following requirements:

• Main branch: main (or specify your default branch)
• Release strategy: Releases should be triggered from the main branch and version tags

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Implementing Issue Reporter Functionality in a VS Code Extension

This guide explains how to add an issue reporter feature to your VS Code extension, allowing users to easily report issues with relevant log output attached. It covers command registration, menu contributions, and the command callback implementation, with code snippets for each step.

NOTE: This example uses logTester as the extension name, but this would be your extension id.

1. Command Registration

Add a new command to your extension's package.json to register the issue reporter command:

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# Unused local variable settings
dotnet_diagnostic.IDE0059.severity = error
dotnet_diagnostic.CS0168.severity = error
dotnet_diagnostic.CS0219.severity = error

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{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "$id": "https://json.schemastore.org/mcp-config-0.1.0.json",
  "title": "MCP Servers Configuration",
  "description": "Configuration schema for MCP (Model Context Protocol) servers",
  "type": "object",
  "required": ["servers"],
  "additionalProperties": false,
  "properties": {
    "inputs": {

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GitHub Copilot Instructions

Prefer C# 12 and 13 Language Features

Primary Constructors

Use primary constructors to simplify your class and struct definitions.

public class Person(string name, int age) {
    public void Deconstruct(out string name, out int age) => (name, age) = (this.name, this.age);

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        {
         "root":true,
         "dependentFileProviders":{
          "add":{
           "addedExtension":{},
           "pathSegment":{"add":{".*":[".js",".css",".html",".htm",".less",".scss",".coffee",".iced",".config",".cs",".vb",".json"]}},
           "extensionToExtension":{
            "add":{
             ".js":[".coffee",".iced",".ts",".tsx",".jsx"],
             ".css":[".less",".scss",".sass",".styl"],

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Console Output

There are 3 ways console output can be displayed in VS Code. These are explained here: https://code.visualstudio.com/docs/csharp/debugger-settings#_console-terminal-window

Below are example outputs using a standard .NET Console app with some Hello World WriteLine statements and ending in a ReadLine

What do you like and want to be the default.

integratedConsole (current default)

Uses the Debug Console in VS Code

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{
    "name": ".NET 10 SDK",
    "image": "mcr.microsoft.com/dotnet/nightly/sdk:10.0-preview",
    "features": {
        "ghcr.io/devcontainers/features/docker-in-docker:2": {},
        "ghcr.io/devcontainers/features/common-utils:2": {},
        "ghcr.io/devcontainers/features/powershell:1": {
            "version": "latest"
        },
        "ghcr.io/azure/azure-dev/azd:0": {

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# Find out what is running on a port
# used like `whoport 22112`
function whoport
{
    param
    (
	    [int] $port
    )
    Get-Process -Id (Get-NetTCPConnection -LocalPort $port).OwningProcess
}