data:0连接超时时间已到。在登录后阶段超过了此超时时间。连接可能在等待服务器完成登录过程并响应时超时；或者在尝试创建多个活动连接时超时。  尝试连接到此服务器时花费的持续时间是 - [Pre-Login] initialization=1；handshake=12503；[Login] initialization=0；authentication=0；[Post-Login] complete=2002；   在 System.Data.ProviderBase.DbConnectionPool.TryGetConnection(DbConnection owningObject, UInt32 waitForMultipleObjectsTimeout, Boolean allowCreate, Boolean onlyOneCheckConnection, DbConnectionOptions userOptions, DbConnectionInternal& connection)
   在 System.Data.ProviderBase.DbConnectionPool.TryGetConnection(DbConnection owningObject, TaskCompletionSource`1 retry, DbConnectionOptions userOptions, DbConnectionInternal& connection)
   在 System.Data.ProviderBase.DbConnectionFactory.TryGetConnection(DbConnection owningConnection, TaskCompletionSource`1 retry, DbConnectionOptions userOptions, DbConnectionInternal oldConnection, DbConnectionInternal& connection)
   在 System.Data.ProviderBase.DbConnectionInternal.TryOpenConnectionInternal(DbConnection outerConnection, DbConnectionFactory connectionFactory, TaskCompletionSource`1 retry, DbConnectionOptions userOptions)
   在 System.Data.SqlClient.SqlConnection.TryOpenInner(TaskCompletionSource`1 retry)
   在 System.Data.SqlClient.SqlConnection.TryOpen(TaskCompletionSource`1 retry)
   在 System.Data.SqlClient.SqlConnection.Open()
   在 B2b.DBUtility.SqlHelper.PrepareCommand(SqlCommand cmd, SqlConnection conn, SqlTransaction trans, CommandType cmdType, String cmdText, SqlParameter[] cmdParms) 位置 f:\mywork\b2b168\b2bweb\B2bBase\SQLHelper.cs:行号 195
   在 B2b.DBUtility.SqlHelper.ExecuteReader(String connectionString, CommandType cmdType, String cmdText, SqlParameter[] commandParameters) 位置 f:\mywork\b2b168\b2bweb\B2bBase\SQLHelper.cs:行号 129
   在 B2b.Shop.ShopBase.GetDataRec(Int32 iValue, Boolean bRenew) 位置 f:\mywork\b2b168\b2bweb\B2bBase\ShopBase.cs:行号 4637