Silverlight Datagrid Master-Details 问题

当Master-Details涉及到多表时,如果多表间有关系存在的话,会出现以下异常:

The remote server returned an error: NotFound.

Sequence contains more than one element, 在获取关系时.

问题描述: http://cid-09b44abc51240269.skydrive.live.com/self.aspx/PublicVedio/SL^_Datagrid^_MD^_Exception.wmv

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