Question

This is my code

        public static bool Login (string iduser, string password)
    {
        bool auth = false;
        string query = string.Format("Select * from [user] where iduser = '{0}' AND password = '{1}' ;", iduser, password);
        SqlCommand cmd = new SqlCommand(query, con);
        con.Open();
        SqlDataReader re = cmd.ExecuteReader();
        auth = re.HasRows;
        con.Close();
        return auth;

    }

When I execute my program an error appears on this line “SqlDataReader re = cmd.ExecuteReader();”. The error message is: Invalid password colonne

Answer 1

The error is pretty self explanatory. Your password coming from your con object is invalid. I would double check where that is being populated and make sure it is correct, since it appears to be a global variable.