# AddToClassList(string)

> Adds a class to the class list of the element in order to assign styles from USS. Note the class name is case-sensitive.

## Definition

* **Type:** Method
* **Namespace:** [UnityEngine.UIElements](/engine/6000.0/script-reference/unityengine/uielements.md)
* **Assembly:** UnityEngine.UIElementsModule

```csharp
public void AddToClassList(string className)
```

### Parameters

**** (\[string]\(https\://learn.microsoft.com/dotnet/api/system.string)): The name of the class to add to the list.