private void button1_Click(object sender, EventArgs e) { this.Hide(); app3dio app = new app3dio(); app.ShowDialog(); }
private void button1_Click(object sender, EventArgs e) { SqlConnection conn = new SqlConnection(ConnectionString); SqlCommand cmd = new SqlCommand("select count (*) as cnt from Table2 where username=@usr and password=@pwd", conn); cmd.Parameters.Clear(); cmd.Parameters.AddWithValue("@usr", textBox1.Text); cmd.Parameters.AddWithValue("@pwd", textBox2.Text); conn.Open(); if (cmd.ExecuteScalar().ToString() == "1") { MessageBox.Show("Login Successfull"); this.Hide(); app3dio app = new app3dio(); app.ShowDialog(); } else { MessageBox.Show("User name or password are not correct"); textBox1.Clear(); textBox2.Clear(); } conn.Close(); }