# Type Parameter

A placeholder type declared by a generic class, interface, or method.

## What is **Type Parameter** in C#?

**Type Parameter** — A placeholder type declared by a generic class, interface, or method.

```csharp
class ListReader
{
    T First<T>(List<T> items)
    {
        return items[0];
    }
}
```

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

- [Type Parameter in Java](https://www.ask-codey.com/glossary/type-parameter)

Source: https://www.ask-codey.com/glossary/type-parameter-c-sharp