System.IO.IOException: I/O error occurred.
   at Npgsql.NpgsqlState.ProcessBackendResponses_Ver_3(NpgsqlConnector context) in c:\Desenvolvimento\NpgsqlBuildOficial2.0\src\Npgsql\NpgsqlState.cs:line 765
   at Npgsql.NpgsqlState.ProcessBackendResponses(NpgsqlConnector context) in c:\Desenvolvimento\NpgsqlBuildOficial2.0\src\Npgsql\NpgsqlState.cs:line 168
   at Npgsql.NpgsqlReadyState.Query(NpgsqlConnector context, NpgsqlCommand command) in c:\Desenvolvimento\NpgsqlBuildOficial2.0\src\Npgsql\NpgsqlReadyState.cs:line 77
   at Npgsql.NpgsqlConnector.Query(NpgsqlCommand queryCommand) in c:\Desenvolvimento\NpgsqlBuildOficial2.0\src\Npgsql\NpgsqlConnector.cs:line 240
   at Npgsql.NpgsqlConnector.ReleaseRegisteredListen() in c:\Desenvolvimento\NpgsqlBuildOficial2.0\src\Npgsql\NpgsqlConnector.cs:line 323
   at Npgsql.NpgsqlConnector.ReleaseResources() in c:\Desenvolvimento\NpgsqlBuildOficial2.0\src\Npgsql\NpgsqlConnector.cs:line 316
   at Npgsql.NpgsqlConnectorPool.UngetPooledConnector(NpgsqlConnection Connection, NpgsqlConnector Connector) in c:\Desenvolvimento\NpgsqlBuildOficial2.0\src\Npgsql\NpgsqlConnectorPool.cs:line 488
   at Npgsql.NpgsqlConnectorPool.ReleasePooledConnectorInternal(NpgsqlConnection Connection, NpgsqlConnector Connector) in c:\Desenvolvimento\NpgsqlBuildOficial2.0\src\Npgsql\NpgsqlConnectorPool.cs:line 266
   at Npgsql.NpgsqlConnectorPool.ReleasePooledConnector(NpgsqlConnection Connection, NpgsqlConnector Connector) in c:\Desenvolvimento\NpgsqlBuildOficial2.0\src\Npgsql\NpgsqlConnectorPool.cs:line 255
   at Npgsql.NpgsqlConnectorPool.ReleaseConnector(NpgsqlConnection Connection, NpgsqlConnector Connector) in c:\Desenvolvimento\NpgsqlBuildOficial2.0\src\Npgsql\NpgsqlConnectorPool.cs:line 240
   at Npgsql.NpgsqlConnection.Close() in c:\Desenvolvimento\NpgsqlBuildOficial2.0\src\Npgsql\NpgsqlConnection.cs:line 521
   at BancoDeDados.PostGreSQL..ctor(Boolean& conectado, ParametrosDb parametro)
   at BancoDeDados.ConnAction..ctor()
   at eNFSWorking.baseclass.GetDatatable(String query)
   at eNFSWorking.baseclass.GetDatarow(String query)
   at eNFSWorking.baseclass.GetParametros(String[] colunas)
   at _default.Page_Load(Object sender, EventArgs e)
   at System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e)
   at System.Web.UI.Control.OnLoad(EventArgs e)
   at System.Web.UI.Control.LoadRecursive()
   at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)   at Npgsql.NpgsqlState.ProcessBackendResponses_Ver_3(NpgsqlConnector context) in c:\Desenvolvimento\NpgsqlBuildOficial2.0\src\Npgsql\NpgsqlState.cs:line 765
   at Npgsql.NpgsqlState.ProcessBackendResponses(NpgsqlConnector context) in c:\Desenvolvimento\NpgsqlBuildOficial2.0\src\Npgsql\NpgsqlState.cs:line 168
   at Npgsql.NpgsqlReadyState.Query(NpgsqlConnector context, NpgsqlCommand command) in c:\Desenvolvimento\NpgsqlBuildOficial2.0\src\Npgsql\NpgsqlReadyState.cs:line 77
   at Npgsql.NpgsqlConnector.Query(NpgsqlCommand queryCommand) in c:\Desenvolvimento\NpgsqlBuildOficial2.0\src\Npgsql\NpgsqlConnector.cs:line 240
   at Npgsql.NpgsqlConnector.ReleaseRegisteredListen() in c:\Desenvolvimento\NpgsqlBuildOficial2.0\src\Npgsql\NpgsqlConnector.cs:line 323
   at Npgsql.NpgsqlConnector.ReleaseResources() in c:\Desenvolvimento\NpgsqlBuildOficial2.0\src\Npgsql\NpgsqlConnector.cs:line 316
   at Npgsql.NpgsqlConnectorPool.UngetPooledConnector(NpgsqlConnection Connection, NpgsqlConnector Connector) in c:\Desenvolvimento\NpgsqlBuildOficial2.0\src\Npgsql\NpgsqlConnectorPool.cs:line 488
   at Npgsql.NpgsqlConnectorPool.ReleasePooledConnectorInternal(NpgsqlConnection Connection, NpgsqlConnector Connector) in c:\Desenvolvimento\NpgsqlBuildOficial2.0\src\Npgsql\NpgsqlConnectorPool.cs:line 266
   at Npgsql.NpgsqlConnectorPool.ReleasePooledConnector(NpgsqlConnection Connection, NpgsqlConnector Connector) in c:\Desenvolvimento\NpgsqlBuildOficial2.0\src\Npgsql\NpgsqlConnectorPool.cs:line 255
   at Npgsql.NpgsqlConnectorPool.ReleaseConnector(NpgsqlConnection Connection, NpgsqlConnector Connector) in c:\Desenvolvimento\NpgsqlBuildOficial2.0\src\Npgsql\NpgsqlConnectorPool.cs:line 240
   at Npgsql.NpgsqlConnection.Close() in c:\Desenvolvimento\NpgsqlBuildOficial2.0\src\Npgsql\NpgsqlConnection.cs:line 521
   at BancoDeDados.PostGreSQL..ctor(Boolean& conectado, ParametrosDb parametro)
   at BancoDeDados.ConnAction..ctor()
   at eNFSWorking.baseclass.GetDatatable(String query)
   at eNFSWorking.baseclass.GetDatarow(String query)
   at eNFSWorking.baseclass.GetParametros(String[] colunas)
   at _default.Page_Load(Object sender, EventArgs e)
   at System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e)
   at System.Web.UI.Control.OnLoad(EventArgs e)
   at System.Web.UI.Control.LoadRecursive()
   at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)