IObjectSpace.FirstOrDefault Method

Name	Parameters	Description
FirstOrDefault<ObjectType>(Expression<Func<ObjectType, Boolean>>, Boolean)	criteriaExpression, inTransaction	Searches for the first object that matches the specified lambda expression. The generic parameter determines the object’s type. This method takes uncommitted changes into account.
FirstOrDefault<ObjectType>(Expression<Func<ObjectType, Boolean>>)	criteriaExpression	Searches for the first object that matches the specified lambda expression. The generic parameter determines the object’s type.