System.IO.IOException: Erro de E/S.
   em Npgsql.NpgsqlState.ProcessBackendResponses_Ver_3(NpgsqlConnector context)
   em Npgsql.NpgsqlState.ProcessBackendResponses(NpgsqlConnector context)
   em Npgsql.NpgsqlReadyState.Query(NpgsqlConnector context, NpgsqlCommand command)
   em Npgsql.NpgsqlConnector.Query(NpgsqlCommand queryCommand)
   em Npgsql.NpgsqlConnector.ReleaseRegisteredListen()
   em Npgsql.NpgsqlConnector.ReleaseResources()
   em Npgsql.NpgsqlConnectorPool.UngetPooledConnector(NpgsqlConnection Connection, NpgsqlConnector Connector)
   em Npgsql.NpgsqlConnectorPool.ReleasePooledConnectorInternal(NpgsqlConnection Connection, NpgsqlConnector Connector)
   em Npgsql.NpgsqlConnectorPool.ReleasePooledConnector(NpgsqlConnection Connection, NpgsqlConnector Connector)
   em Npgsql.NpgsqlConnectorPool.ReleaseConnector(NpgsqlConnection Connection, NpgsqlConnector Connector)
   em Npgsql.NpgsqlConnection.Close()
   em BancoDeDados.PostGreSQL..ctor(Boolean& conectado, ParametrosDb parametro)
   em BancoDeDados.ConnAction..ctor()
   em eNFSWorking.baseclass.GetDatatable(String query)
   em eNFSWorking.baseclass.GetDatarow(String query)
   em eNFSWorking.baseclass.GetParametrosComAlias(String[] colunas)
   em internet.Page_Load(Object sender, EventArgs e)
   em System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e)
   em System.Web.UI.Control.OnLoad(EventArgs e)
   em System.Web.UI.Control.LoadRecursive()
   em System.Web.UI.Control.LoadRecursive()
   em System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)   em Npgsql.NpgsqlState.ProcessBackendResponses_Ver_3(NpgsqlConnector context)
   em Npgsql.NpgsqlState.ProcessBackendResponses(NpgsqlConnector context)
   em Npgsql.NpgsqlReadyState.Query(NpgsqlConnector context, NpgsqlCommand command)
   em Npgsql.NpgsqlConnector.Query(NpgsqlCommand queryCommand)
   em Npgsql.NpgsqlConnector.ReleaseRegisteredListen()
   em Npgsql.NpgsqlConnector.ReleaseResources()
   em Npgsql.NpgsqlConnectorPool.UngetPooledConnector(NpgsqlConnection Connection, NpgsqlConnector Connector)
   em Npgsql.NpgsqlConnectorPool.ReleasePooledConnectorInternal(NpgsqlConnection Connection, NpgsqlConnector Connector)
   em Npgsql.NpgsqlConnectorPool.ReleasePooledConnector(NpgsqlConnection Connection, NpgsqlConnector Connector)
   em Npgsql.NpgsqlConnectorPool.ReleaseConnector(NpgsqlConnection Connection, NpgsqlConnector Connector)
   em Npgsql.NpgsqlConnection.Close()
   em BancoDeDados.PostGreSQL..ctor(Boolean& conectado, ParametrosDb parametro)
   em BancoDeDados.ConnAction..ctor()
   em eNFSWorking.baseclass.GetDatatable(String query)
   em eNFSWorking.baseclass.GetDatarow(String query)
   em eNFSWorking.baseclass.GetParametrosComAlias(String[] colunas)
   em internet.Page_Load(Object sender, EventArgs e)
   em System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e)
   em System.Web.UI.Control.OnLoad(EventArgs e)
   em System.Web.UI.Control.LoadRecursive()
   em System.Web.UI.Control.LoadRecursive()
   em System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)