Invalid object name 'UserInfo'
使用ADO.NET或者其他的ORM框架的时候，抛出这个异常，可能是连接的数据库不对。也许程序要连的数据库是Database1,而你的配置文件或者连接字符串是拷贝过来的，修改的时候疏忽了没有改完全，就会出现这个异常。
异常具体信息
NHibernate.Exceptions.GenericADOException : could not execute query[ select userinfo0_.id as id0_, userinfo0_.name as name2_0_, userinfo0_.description as descript3_0_, userinfo0_.state as state4_0_ from UserInfo userinfo0_ where userinfo0_.name ='testname' ][SQL: select userinfo0_.id as id0_, userinfo0_.name as name2_0_, userinfo0_.description as descript3_0_, userinfo0_.state as state4_0_ from UserInfo userinfo0_ where userinfo0_.name ='testname'] ----> System.Data.SqlClient.SqlException : Invalid object name 'UserInfo'.at NHibernate.Loader.Loader.DoList(ISessionImplementor session, QueryParameters queryParameters)at NHibernate.Loader.Loader.ListIgnoreQueryCache(ISessionImplementor session, QueryParameters queryParameters)at NHibernate.Loader.Loader.List(ISessionImplementor session, QueryParameters queryParameters, ISet`1 querySpaces, IType[] resultTypes)at NHibernate.Hql.Ast.ANTLR.Loader.QueryLoader.List(ISessionImplementor session, QueryParameters queryParameters)at NHibernate.Hql.Ast.ANTLR.QueryTranslatorImpl.List(ISessionImplementor session, QueryParameters queryParameters)at NHibernate.Engine.Query.HQLQueryPlan.PerformList(QueryParameters queryParameters, ISessionImplementor session, IList results)at NHibernate.Impl.SessionImpl.List(String query, QueryParameters queryParameters, IList results)at NHibernate.Impl.SessionImpl.List[T](String query, QueryParameters parameters)at NHibernate.Impl.QueryImpl.List[T]()UserInfoDAL.cs(21,0): at NHibernateWCF.DAL.UserInfoDAL.ExistUserInfo(String name)UserInfoDALTest.cs(18,0): at NHibernateWCF.Test.UserInfoDALTest.ExistUserInfoTest()--SqlExceptionat System.Data.SqlClient.SqlConnection.OnError(SqlException exception, Boolean breakConnection)at System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection)at System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning()at System.Data.SqlClient.TdsParser.Run(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj)at System.Data.SqlClient.SqlDataReader.ConsumeMetaData()at System.Data.SqlClient.SqlDataReader.get_MetaData()at System.Data.SqlClient.SqlCommand.FinishExecuteReader(SqlDataReader ds, RunBehavior runBehavior, String resetOptionsString)at System.Data.SqlClient.SqlCommand.RunExecuteReaderTds(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, Boolean async)at System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method, DbAsyncResult result)at System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method)at System.Data.SqlClient.SqlCommand.ExecuteReader(CommandBehavior behavior, String method)at System.Data.SqlClient.SqlCommand.ExecuteDbDataReader(CommandBehavior behavior)at System.Data.Common.DbCommand.System.Data.IDbCommand.ExecuteReader()这是NHibernate情况下，当连接数据库不一致的时候出现的堆栈信息。使用ADO.NET或者其他框架可能会由细节上的不同，但总体上应该都是这一类的异常。解决办法就是修改连接字符串，把配置中连接的数据库改成正确的数据库，使执行sql语句的时候能找到相应的表。
