public static FrmManage GetInstance() { if (instance == null || instance.IsDisposed) { lock (syncRoot) { if (instance == null || instance.IsDisposed) { instance = new FrmManage(); } } } return instance; }
private void btnLogin_Click(object sender, EventArgs e) { if (CommonHelper.CheckPw(txtPw.Text)) { //sh.CloseRec(); this.Hide(); FrmManage fm = new FrmManage(); fm.Show(); } else { this.errorProvider1.SetError(this.txtPw, "登录密码输入错误,请重新输入!"); txtPw.Focus(); } }