private void btnLogin_Click(object sender, EventArgs e) { SconitWs.SecurityService securityService = new SconitWs.SecurityService(); bool isHavePermission = securityService.VerifyUserPassword(tbUserCode.Text.Trim(), tbPassword.Text.Trim()); if (isHavePermission) { if (loginEvent != null) { loginEvent(tbUserCode.Text.Trim(), tbPassword.Text.Trim()); this.Close(); return; } this.Visible = false; PrintClient printClient = new PrintClient(); printClient.Show(); } else { lblMessage.Visible = true; lblMessage.Text = "用户名或者密码错误"; } }