Version Management and Updates
Level: Intermediate
- Check installed .NET versions
- Update .NET SDK
- Managing multiple .NET versions
- LTS vs Current versions
- Migrating projects to new versions
- Breaking changes between versions
Check Installed Versions
dotnet --version
Shows only running SDK version.
Full info:
dotnet --info
Shows SDKs, runtimes, environment details.
LTS vs Current
.NET Releases every November:
| Type | Support | Example |
|---|---|---|
| LTS (Long Term Support) | 3 years | .NET 6, 8 |
| Current | 1.5 years | .NET 7, 9 |
For production: Use LTS versions
- .NET 6 (supported until Nov 2024)
- .NET 8 (supported until Nov 2026)
Current versions are bleeding-edge, shorter support.
Install Multiple Versions
Can have .NET 6, 7, 8 simultaneously.
Each SDK independent.
Use global.json to specify project version:
{
"sdk": {
"version": "8.0.0"
}
}
Any developer using this project uses .NET 8.
Update .NET SDK
Easiest: Reinstall from dotnet.microsoft.com
Or use package manager:
Windows (Chocolatey):
choco upgrade dotnet-sdk
Mac (Homebrew):
brew upgrade dotnet
Linux (apt):
sudo apt update
sudo apt upgrade dotnet-sdk-8.0
Migrate Project to New Version
Current: .NET 7, Want: .NET 8
Edit csproj:
<TargetFramework>net8.0</TargetFramework>
Then:
dotnet build
Fix any breaking changes.
Breaking Changes
When upgrading major version (7→8):
Some APIs may change or be removed.
Example (.NET 7→8):
- Obsolete APIs removed
- Default behaviors changed
- New required parameters
Check: https://docs.microsoft.com/dotnet/core/compatibility/
Search version-specific breaking changes.
Version Numbers Explained
.NET 8.0.1
- 8 = Major version (breaking changes allowed)
- 0 = Minor version (new features, backward compatible)
- 1 = Patch version (bug fixes only)
Safe to update:
- Patch: Always (8.0.0 → 8.0.1)
- Minor: Usually (8.0 → 8.1)
- Major: Requires testing (7 → 8)
Support Lifecycle
Released: Nov 2023
├─ LTS Support: Nov 2023 - Nov 2026 (3 years)
└─ EOL (End of Life): Nov 2026
Before EOL, migrate to newer LTS.
Recommendations
For learning: Use .NET 8 (latest LTS)
For production: Use LTS versions
- Current: .NET 8
- Previous: .NET 6
Update strategy:
- Monthly: Apply patches (8.0.0 → 8.0.1)
- Yearly: Evaluate major upgrade (8 → 9)
- Migrate before EOL
Check Package Compatibility
Before upgrading, check NuGet packages support new framework:
dotnet add package Microsoft.EntityFrameworkCore --version 8.0.0
Usually, latest package works with latest .NET.
Q: What is the difference between LTS and Current .NET versions, and which should you use?
Good Answer: ".NET releases annually in November. LTS (Long Term Support) versions receive 3 years of support, while Current versions only get 1.5 years. Current versions (.NET 7, 9) are latest and have newest features but shorter support windows, making them risky for production code. LTS versions (.NET 6, 8) are stable, well-tested, and safer for long-term projects. For learning I use the latest LTS (.NET 8), but for production code I ensure I'm on an LTS version and plan to migrate before End of Life. When upgrading major versions, I check the official breaking changes documentation and test thoroughly."
Use ChatGPT, Claude, or Copilot to go deeper on Version management and .NET updates. Try these prompts:
"What is the difference between LTS and Current .NET versions?""How do I check what .NET versions I have installed?""How do I migrate my project to a new .NET version?""What are breaking changes and how do I handle them?"
💡 Tip: After reading this article, paste your own code into AI and ask "What could go wrong here and why?" — fastest way to find edge cases and deepen understanding.