private void button1_Click(object sender, EventArgs e) { con = new OleDbConnection(spath); con.Open(); string Q = "Select * from users where username='******' And password='******'"; OleDbDataAdapter ds = new OleDbDataAdapter(Q, con); DataTable dt = new DataTable(); dt = new DataTable(); ds.Fill(dt); if ((uname_text.Text == String.Empty) || (password_text.Text == String.Empty)) { MessageBox.Show("Please enter username and password!", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error); } else if (dt.Rows.Count > 0) { //then the result will get the name of the user and display it in the form using label control. MessageBox.Show("Login Successful!", "Congratulation!", MessageBoxButtons.OK, MessageBoxIcon.Information); this.Hide(); Menu_form mf = new Menu_form(); mf.Show(); } else { MessageBox.Show("Please enter a valid username and password!", "Error!", MessageBoxButtons.OK, MessageBoxIcon.Error); } }
private void closebtn_Click(object sender, EventArgs e) { this.Hide(); Menu_form mf = new Menu_form(); mf.Show(); }