A custom
Attribute that marks a field or property to control how it is serialized or to indicate that protected or private data should be included in serialization.
Namespace: Microsoft.Xna.Framework.Content
Assembly: Microsoft.Xna.Framework (in microsoft.xna.framework.dll)
[AttributeUsageAttribute(384)]
public sealed class ContentSerializerAttribute : Attribute
Reference
Programming Guide
Xbox 360, Windows XP SP2, Windows Vista, Zune