[Mono-devel-list] ASP.NET and SQL SERVER 2000

falconn at free.fr falconn at free.fr
Tue Sep 21 07:34:53 EDT 2004

Hi !

I've a strange problem with mono. I want to get informations from a database
under SQL SERVER. I tried the following example taken from the MonoHandbook
doing some modifications.
But when I run it, sometimes it's working, sometimes not : it shows an error
message (something like it can't find the sql server or I don't have access to
the database). I tried to use unixODBC with freetds and it works, but it's a
little bit slow! So it doesn't seem to be a problem with my SQL Server. Is it a

Here is the code I use :

using System;
using System.Data;
using System.Data.SqlClient;

 public class Test
    public static void Main(string[] args)
  string connectionString =
     "Server=MyServer;" +
     "Database=pubs;" +
     "User ID=MySqlServerUserId;" +
  IDbConnection dbcon;
  dbcon = new SqlConnection(connectionString);
  IDbCommand dbcmd = dbcon.CreateCommand();
  string sql =
      "SELECT fname, lname " +
      "FROM employee";
  dbcmd.CommandText = sql;
  IDataReader reader = dbcmd.ExecuteReader();
  while(reader.Read()) {
  string FirstName = (string) reader["fname"];
  string LastName = (string) reader["lname"];
  Console.WriteLine("Name: " +
       FirstName + " " + LastName);
  // clean up
  reader = null;
  dbcmd = null;
  dbcon = null;

Here is the error message when it doesn't work :

mono testing.exe

Unhandled Exception: System.Data.SqlClient.SqlException: SQL Server does not
exist or access denied.
in <0x0020e> System.Data.SqlClient.SqlConnection:Open ()
in <0x00066> Test:Main (string[])

zsh: exit 1     mono testing.exe

I have tested the connexion with SQLSharp and the problem remains the same...

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