public static void SaveUser(User user)
{
NpgsqlConnection conn = new NpgsqlConnection (conn_string);
NpgsqlCommand comm = conn.CreateCommand ();
// Add data to the User table
string sql = "UPDATE users SET email = @email, gravatar = @gravatar, svn = @svn WHERE id = @id";
comm.CommandText = sql;
comm.Parameters.Add ("@id", user.ID);
comm.Parameters.Add ("@svn", user.SvnAccount);
comm.Parameters.Add ("@email", user.Email);
comm.Parameters.Add ("@gravatar", user.Gravatar);
conn.Open ();
comm.ExecuteNonQuery ();
comm.Dispose ();
}