Sqldatareader does not return database information

Question

This Datareader below when you type the product code it shows the name of the product in another textbox, works ok, but when instead of searching for the code search by the codebar it does not bring the name in the other textbox. Could someone please help.

            string constring = @"Data Source=TI02;Initial Catalog=Loja;Integrated Security=True";  
            //string Query = "select * from produtos where codigo=' " + textBox1.Text + " ';"; //esse funciona 
            string Query = "select * from produtos where codigobarra=' " + textBox1.Text + " ';";// esse não funciona

            SqlConnection conDataBase = new SqlConnection(constring);
            SqlCommand cmdDataBase = new SqlCommand(Query, conDataBase);
            SqlDataReader myReader;


                conDataBase.Open();
                myReader = cmdDataBase.ExecuteReader();
                while (myReader.Read())
                {
                    string snome = myReader.GetString(myReader.GetOrdinal("nome")).ToString();
                    textBox2.Text = snome;
                    string sPreco = myReader.GetDecimal(myReader.GetOrdinal("preco")).ToString();
                    TextBoxValor.Text = sPreco;
                }