private void button1_Click(object sender, EventArgs e)
        {
            Menue m = new Menue();

            m.Show();
            this.Hide();
        }
Esempio n. 2
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        private void button2_Click(object sender, EventArgs e)
        {
            SqlConnection connection = new SqlConnection("Data Source=.;Initial Catalog=GEAR_FACTORY_DB;Integrated Security=True");

            connection.Open();

            DateTime date1 = new DateTime();

            date1       = DateTime.Now;
            label4.Text = date1.ToString();
            SqlCommand cmd1 = new SqlCommand("insert into Log_File (username,password,sign_in_date) values ('" + textBox1.Text + "','" + textBox2.Text + "','" + label4.Text + "')", connection);

            cmd1.ExecuteNonQuery();


            SqlCommand cmd = new SqlCommand("select * from SignIn where username = '******' and password = '******'", connection);


            SqlDataReader reader = cmd.ExecuteReader();
            //command will return read data after execution
            int count = 0;

            while (reader.Read())
            {
                count = count + 1;
            }
            if (count == 1)
            {
                MessageBox.Show("user and passward is correct");
                connection.Dispose();       //to release all resources
                //to hide this form
                Menue m = new Menue();
                m.Show();
                this.Close();
            }
            else if (count > 1)
            {
                MessageBox.Show("doublicate user and passward");
            }
            else
            {
                textBox1.Text = "";

                textBox2.Text = "";
                MessageBox.Show("user and passward not correct");
            }



            connection.Close();
        }