private void btn_login_Click(object sender, EventArgs e) { string username = txt_userName.Text.Trim(); string pwd = txt_pwd.Text.Trim(); string code = txt_code.Text.Trim(); if (!string.IsNullOrEmpty(username) && !string.IsNullOrEmpty(pwd)) { this.toolStripMsg.Text = "正在登录......"; string msg = ""; if (ots.Login(username, pwd, code, out msg)) { //MessageBox.Show("登录成功"); OpenMainForm(); } else { this.toolStripMsg.Text = msg; } } }