private void btnLogin_Click(object sender, EventArgs e) { con = new SqlConnection(connection); string query = "SELECT * FROM Users where Email = '" + cbb_Email.Text + "' AND Password = '******'"; SqlDataAdapter sda = new SqlDataAdapter(query, con); DataTable dtb = new DataTable(); sda.Fill(dtb); if (dtb.Rows.Count == 1) { MessageBox.Show("Login successfully"); MainOptions mainOptions = new MainOptions(); mainOptions.Show(); } else { MessageBox.Show("Login unsuccessfully"); } }
private void btnLogin_Click(object sender, EventArgs e) { SqlConnection con = new SqlConnection("Data Source=DESKTOP-Q1QGNFE;Initial Catalog=module5a;Integrated Security=True"); string query = "SELECT ID FROM Users where Email = '" + txtUserName.Text + "' AND Password = '******'"; SqlCommand cmd = new SqlCommand(query, con); con.Open(); SqlDataReader sdr = cmd.ExecuteReader(); if (sdr.HasRows) { while (sdr.Read()) { user_id = sdr.GetInt32(0); } MessageBox.Show("Login successfully " + user_id.ToString()); MainOptions mainOptions = new MainOptions(); mainOptions.Show(); } else { MessageBox.Show("Login unsuccessfully"); } }