Calling from another windows form issue in C#

Question

I have a button on Form1 which has this code

       // hide main form
        this.Hide();

        // show other form
        Form2 form2 = new Form2();
        form2.ShowDialog();

        // close application
        this.Close();

Now on Form2 load i have this code which do not show me result,although reader has values. It shows me Form2 with empty textfields

 using (SqlConnection connection = new SqlConnection(connectionString))
        {
            string queryString = "SELECT * FROM test;";
            SqlCommand command =
                new SqlCommand(queryString, connection);
            connection.Open();

            SqlDataReader reader1 = command.ExecuteReader();

            // Call Read before accessing data. 
            while (reader1.Read())
            {
                t1.Text = reader1.GetString(0);
                t2.Text = reader1.GetString(1);


            }

            // Call Close when done reading.
            reader1.Close();
        }

Answer 1

Avoid this :

            t1.Text = reader1.GetString(0);
            t2.Text = reader1.GetString(1);

Don't mention the type , because when you use this query

select * from test ;

and then you change the type of your columns , you will get bad results.

So, you may try this :

            t1.Text = reader1[0].ToString();
            t2.Text = reader1[1].ToString();