其它页面连接时没问题就一个页面连接数据库时报的异常，急救！！！
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{ "超时时间已到。在操作完成之前超时时间已过或服务器未响应。 " }
[System.Data.SqlClient.SqlException]: {System.Data.SqlClient.SqlException}
System.Object: {System.Data.SqlClient.SqlException}
_className: null
_COMPlusExceptionCode: -532459699
_exceptionMethod: <未定义的值>
_exceptionMethodString: null
_helpURL: null
_HResult: -2146232060
_innerException: { }
_message: "系统错误。 "
_remoteStackIndex: 0
_remoteStackTraceString: null
_source: null
_stackTrace: {System.Array}
_stackTraceString: null
_xcode: -532459699
_xptrs: 0
HelpLink: null
HResult: -2146232060
InnerException: { }
Message: "超时时间已到。在操作完成之前超时时间已过或服务器未响应。 "
Source: ".Net SqlClient Data Provider "
StackTrace: " at System.Data.SqlClient.SqlConnection.OnError(SqlException exception, TdsParserState state)\r\n at System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, TdsParserState state)\r\n at System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning()\r\n at System.Data.SqlClient.TdsParser.ReadNetlib(Int32 bytesExpected)\r\n at System.Data.SqlClient.TdsParser.ReadBuffer()\r\n at System.Data.SqlClient.TdsParser.ReadByteArray(Byte[] buff, Int32 offset, Int32 len)\r\n at System.Data.SqlClient.TdsParser.ReadDouble()\r\n at System.Data.SqlClient.TdsParser.ReadValue(_SqlMetaData md, Int32 length)\r\n at System.Data.SqlClient.SqlDataReader.SeqRead(Int32 i, Boolean useSQLTypes, Boolean byteAccess, Boolean& isNull)\r\n at System.Data.SqlClient.SqlDataReader.SeqRead(Int32 i, Boolean useSQLTypes, Boolean byteAccess)\r\n at System.Data.SqlClient.SqlDataReader.GetValues(Object[] values)\r\n at System.Data.Common.SchemaMapping.LoadDataRow(Boolean clearDataValues, Boolean
acceptChanges)\r\n at System.Data.Common.DbDataAdapter.FillLoadDataRow(SchemaMapping mapping)\r\n at System.Data.Common.DbDataAdapter.FillFromReader(Object data, String srcTable, IDataReader dataReader, Int32 startRecord, Int32 maxRecords, DataColumn parentChapterColumn, Object parentChapterValue)\r\n at System.Data.Common.DbDataAdapter.Fill(DataSet dataSet, String srcTable, IDataReader dataReader, Int32 startRecord, Int32 maxRecords)\r\n at System.Data.Common.DbDataAdapter.FillFromCommand(Object data, Int32 startRecord, Int32 maxRecords, String srcTable, IDbCommand command, CommandBehavior behavior)\r\n at System.Data.Common.DbDataAdapter.Fill(DataSet dataSet, Int32 startRecord, Int32 maxRecords, String srcTable, IDbCommand command, CommandBehavior behavior)\r\n at System.Data.Common.DbDataAdapter.Fill(DataSet dataSet)\r\n at ACCP.DAO.DefaultProvider.GetDataSet(String TableName)\r\n at ACCP.DAO.DefaultProvider.GetTable(String TableName)\r\n at ACCP.DAO.DefaultProvider.GetTable()\r\n at fe