private void btnOK_Click(object sender, EventArgs e) { _EmpInfoMenthod tbEmp = new _EmpInfoMenthod(); if (txtID.Text == "") { MessageBox.Show("用户名不能为空!"); return; } if (txtPwd.Text == "") { MessageBox.Show("密码不能为空!"); return; } if (tbEmp.tb_EmpInfoFind(txtID.Text, txtPwd.Text, 2) == 1) { frmMain frm = new frmMain(txtID.Text); frm.Show(); this.Hide(); } else { MessageBox.Show("登录失败!"); } }