# GetSingletonBuffer<T>(bool)

> Gets the value of a singleton buffer component. Note that if querying a singleton buffer component from a system-associated entity, the query must include either EntityQueryOptions.IncludeSystems or the SystemInstance component.

## Definition

* **Type:** Method
* **Namespace:** [Unity.Entities](/engine/7000.0/script-reference/unity/entities.md)
* **Assembly:** UnityEngine.EntitiesModule

```csharp
public DynamicBuffer<T> GetSingletonBuffer<T>(bool isReadOnly = false) where T : unmanaged, IBufferElementData
```

### Parameters

**** (\[bool]\(https\://learn.microsoft.com/dotnet/api/system.boolean)): If the caller does not need to modify the buffer contents, pass true here.

### Returns

| Type                                                                                  | Description           |
| ------------------------------------------------------------------------------------- | --------------------- |
| [DynamicBuffer\<T>](/engine/7000.0/script-reference/unity/entities/dynamicbuffer1.md) | The singleton buffer. |

### Remarks

A singleton buffer component is a component of which only one instance exists that satisfies this query. There is no SetSingletonBuffer(); to change the contents of a singleton buffer, pass isReadOnly=false to GetSingletonBuffer() and then modify the contents directly.

Additional Resources: [EntityQuery.GetSingletonEntity](/engine/7000.0/script-reference/unity/entities/entityquery/getsingletonentity.md), [ComponentSystemBase.GetSingleton](/engine/7000.0/script-reference/unity/entities/componentsystembase/getsingleton.md)