Ibatis sqlmap configuration Problem "Check the IBatisNet.DataAccess.DaoSessionHandlers.SqlMapDaoSessionHandler."

-The error occurred while configure Daosessionhandler.
-the error occurred in <property name= "resource" value= "App_data\sqlmap.config" xmlns= "http://ibatis.apache.org/ DataAccess "/>
-Check the IBatisNet.DataAccess.DaoSessionHandlers.SqlMapDaoSessionHandler.

This problem must be checked in the Sqlmap.config file is not some of the map files can not be found or duplicated, the reason for the most part of the day is because I unit Test no problem, the same configuration,

The web is not accurate to error, I made very depressed, and later found that a company DLL is not referenced, unit tests are quoted.

Make a record, remind yourself, be careful, follow the steps to

Ibatis sqlmap configuration Problem "Check the IBatisNet.DataAccess.DaoSessionHandlers.SqlMapDaoSessionHandler."