# Lambda Expression

A compact function value written with the => operator.

## What is **Lambda Expression** in C#?

**Lambda Expression** — A compact function value written with the => operator.

```csharp
class LabelFormatter
{
    Func<string, string> uppercase = text => text.ToUpper();
}
```

Level: Freelancer · [More C# terms at this level](https://www.ask-codey.com/glossary/subjects/c-sharp/freelancer)

Updated: September 27, 2026

## In other subjects

- [Lambda Expression in Java](https://www.ask-codey.com/glossary/lambda-expression)

Source: https://www.ask-codey.com/glossary/lambda-expression-c-sharp