# using Directive

A declaration that lets code use a namespace's types without their full names.

## What is **using Directive** in C#?

**using Directive** — A declaration that lets code use a namespace's types without their full names.

```csharp
using System.Globalization;

namespace Orders;

class OrderDate
{
    DateTime placedOn = DateTime.Today;
}
```

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

Updated: September 27, 2026

Source: https://www.ask-codey.com/glossary/using-directive