private void txtUserPassword_KeyDown(object sender, KeyEventArgs e) { if (e.KeyCode == Keys.Enter) { users.UserName = txtUserName.Text; users.UserPassword = txtUserPassword.Text; try { string where = string.Format("where UserName='******' and UserPassword='******'", users.UserName, users.UserPassword); DataTable dt = da.GetData <Users>(where); users.Id = Convert.ToInt32(dt.Rows[0][3].ToString()); if (dt.Rows[0][2].ToString().ToUpper() == "MANAGER") { Manager man = new Manager(home, users); man.Show(); home.Hide(); } if (dt.Rows[0][2].ToString().ToUpper() == "REPORTER") { Reporter rep = new Reporter(home, users); rep.Show(); home.Hide(); } if (dt.Rows[0][2].ToString().ToUpper() == "CONSULTANT") { Consultants con = new Consultants(home, users); con.Show(); home.Hide(); } if (dt.Rows[0][2].ToString().ToUpper() == "OWNER") { Owners owns = new Owners(home, users); owns.Show(); home.Hide(); } MessageBox.Show("Login Success"); } catch (Exception en) { MessageBox.Show("Login Failed"); } } }