如何为多个BO属性定义IDataErrorInfo错误属性

I'm starting to implement validation in my WPF project via the IDataErrorInfo interface. My business object contains multiple properties with validation info. How do I get a list of ALL the error messages associated with the object. My thought is that thats what the Error property is for, but I cannot track down anyone using this for reporting on multiple properties. I'm starting to implement validation in my WPF