# Sandbox.ResourcePublishContext.CreateThumbnailFunction

```csharp
System.Func<Bitmap> CreateThumbnailFunction { get; set; }
```

A function to create a thumbnail for this resource. If not null, this will be called to create the thumbnail.

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