不支持关键字“metadata”问题的解决方法
原来的语句：
metadata=res://*/Models.CallCenterEntities2.0.csdl|res://*/Models.CallCenterEntities2.0.ssdl|res://*/Models.CallCenterEntities2.0.msl;provider=System.Data.SqlClient;provider connection string="data source=192.168.1.55;initial catalog=SeatOutsource_1448;persist security info=True;user id=sa;password=xA123456;MultipleActiveResultSets=True;App=EntityFramework"metadata=res
