private void button1_Click(object sender, EventArgs e) { try { using (MySqlConnection conn = new MySqlConnection()) { //kreiranje konekcije conn.ConnectionString = "datasource=localhost;port=3306;username=root;password=root"; MySqlCommand comm = new MySqlCommand("SELECT * FROM testdata.users WHERE BINARY user_name = '" + this.user_name.Text + "' AND user_pass = '******';", conn); conn.Open(); MySqlDataReader read = comm.ExecuteReader(); int count = 0; while (read.Read()) { count = count + 1; } if (count == 1) { MessageBox.Show("Povezan na bazu!"); this.Hide(); Podatci p = new Podatci(); p.ShowDialog(); } else if (count > 1) { MessageBox.Show("Dupla registracija!!"); } else if (user_name.Text == "" && pass_txt.Text == "") { MessageBox.Show("Niste ništa upisali!!!"); } else { MessageBox.Show("Krivi user ili pass!! \nProbajte ponovo"); } read.Close(); conn.Close(); } } catch (Exception) { MessageBox.Show("Greška!"); } }