private void buttonBack_Click(object sender, EventArgs e) { DialogResult dialog = MessageBox.Show("Do you really want to go back?", "Back", MessageBoxButtons.YesNo); if (dialog == DialogResult.Yes) { this.Close(); mainPage pageObj = new mainPage(); pageObj.Show(); } }
private void buttonLogIn_Click(object sender, EventArgs e) { SqlConnection con = new SqlConnection(@"Data Source=(LocalDB)\MSSQLLocalDB;AttachDbFilename=D:\Visual Studio\Projects\Shop_Management_System\Database_Con\SMS_Database.mdf;Integrated Security=True;Connect Timeout=30"); // here wil be the path of the database. (connection string) SqlDataAdapter sda = new SqlDataAdapter("Select count(*) from LogIn where Username ='******' and Password ='******' ", con); // To fetch data DataTable dt = new DataTable(); sda.Fill(dt); /* * if username and password matches any one from the logIn table then logIn will happen. */ if (dt.Rows[0][0].ToString() == "1") { this.Hide(); mainPage pageObj = new mainPage(); pageObj.Show(); } else { MessageBox.Show("Check your Username and Password."); } }