public enum XmlSchemaUse {
   None = 0,
   Optional = 1,
   Prohibited = 2,
   Required = 3
}

This enumeration is returned by XmlSchemaAttribute.Use to indicate whether the attribute is prohibited, required, or optional. The default is Optional.

Hierarchy

System.Object System.ValueType System.Enum(System.IComparable, System.IFormattable, System.IConvertible) XmlSchemaUse