# ICollection<T>

An interface for a countable collection that can add, remove, and inspect items.

## What is **ICollection<T>** in C#?

**ICollection<T>** — An interface for a countable collection that can add, remove, and inspect items.

```csharp
class TaskList
{
    ICollection<string> tasks = new List<string>();
}
```

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Updated: September 27, 2026

Source: https://www.ask-codey.com/glossary/icollection-t