# IsValid()

> Check if the ReadHandle is valid.

## Definition

* **Type:** Method
* **Namespace:** [Unity.IO.LowLevel.Unsafe](/engine/6000.5/script-reference/unity/io/lowlevel/unsafe.md)
* **Assembly:** UnityEngine.CoreModule

```csharp
public bool IsValid()
```

### Returns

| Type                                                          | Description                      |
| ------------------------------------------------------------- | -------------------------------- |
| [bool](https://learn.microsoft.com/dotnet/api/system.boolean) | True if the ReadHandle is valid. |