# Sandbox.ResourceLoadContext.ReadSource

```csharp
System.ReadOnlySpan<byte> ReadSource()
```

Reads the complete uncompiled source file. The returned span is only valid during Resource.OnLoaded.

### Returns

`System.ReadOnlySpan<byte>`

Declared in [Sandbox.ResourceLoadContext](/api/Sandbox.ResourceLoadContext).
Assembly: `Sandbox.Engine`.