private void btn_back_Click(object sender, EventArgs e) { if (lg == null) { back.Show(); } else { lg.Show(); } this.Close(); }
private void btn_login_Click(object sender, EventArgs e) { if (txt_user.Text == "admin" && txt_pass.Text == "admin123") { Admin_Dashboard admin = new Admin_Dashboard(this); admin.Show(); this.Hide(); } else { sql.Open(); string username = txt_user.Text.Trim(); try { string query = "Select Student_Id,Password from [dbo].[student_details] where Student_Id = " + Convert.ToInt64(username); SqlCommand cmd = new SqlCommand(query, sql); SqlDataReader reader = cmd.ExecuteReader(); reader.Read(); try { if ((reader[0].ToString().Trim() == txt_user.Text) && (reader[1].ToString().Trim() == txt_pass.Text)) { User_Dashboard user = new User_Dashboard(this, username); user.Show(); this.Hide(); } else { MessageBox.Show("Invalid Password"); } } catch { MessageBox.Show("Invalid Username"); } } catch { MessageBox.Show("Invalid Username or password"); } } sql.Close(); }
private void btn_back_Click(object sender, EventArgs e) { this.Close(); back.Show(); }