.NET 7 is Coming Soon! Is It Microsoft’s Worst Update Ever?

For months now we have seen updates and news from the .NET development team. According to Microsoft, .NET 7 will be officially released in November 2022 and will replace the current version of .NET 6. Microsoft said it’s a faster and lighter version than ever. Really?

let’s talk about the new features and performance improvements it will bring!

.NET Release Modulation

The All New .NET 7 Features and Updates

1. Faster, Lighter Apps (Native AOT)

Ahead-Of-Time generates code at compile-time instead of run-time but on Native. This is not completely a new concept. Using Native AOT will benefit in various ways as it will have lower memory usage and restricted platform access with reduced disk size making for faster startup time. These are showcased by promising numbers in the terms of compilation speed and size.

2. ASP.NET Core

Additional performance improvements to make it faster and more efficient. .NET 6 already had a massive impact on performance and .NET 7 will take it even further. That being so, .NET 7 updates will widely enhance the .NET 7 performance. Although you might not run into performance issues today, you can save your money without altering your source code when running on the cloud.

3. The new Regex Source Generator

The source generator will fill the implementation of that method by itself. And will also get updated automatically as you make changes to your pattern or to the additional options that you pass in. Here is an example:

Before:

public class Foo
{
public Regex regex = new Regex(@"abc|def", RegexOptions.IgnoreCase);public bool Bar(string input)
{
bool isMatch = regex.IsMatch(input);
// ..
}
}

After:

public partial class Foo // <-- Make the class a partial class
{
[RegexGenerator(@"abc|def", RegexOptions.IgnoreCase)] // <-- Add the RegexGenerator attribute and pass in your pattern and options
public static partial Regex MyRegex(); // <-- Declare the partial method, which will be implemented by the source generatorpublic bool Bar(string input)
{
bool isMatch = MyRegex().IsMatch(input); // <– Use the generated engine by invoking the partial method.
// ..
}
}

4. .NET MAUI

In .NET 7 there will be some tooling and performance improvements for .NET MAUI development. Some other stories included are

• Map control
• DualScreen Controls
• Improve “Getting Started”
• Improve UI responsiveness
• Improve app startup and app size
• Migration assistant from Xamarin projects
• Improve native library interop

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