使用c＃启用子窗体中的菜单条

Question

如何以子格式启用菜单条？

我只想在关闭子表单时启用菜单按钮条 如何以子格式编码？

学生....

private void tsmNewEmp_Click(object sender, EventArgs e)
{
    if(NewEmp == null)
    {
        NewEmp = new NewEmployee();
        NewEmp.MdiParent = this;
    }
    NewEmp.Show();
    tsmNewEmp.Enabled = false;
    tsmNewContract.Enabled = false;
}

Answer 1

您可以在儿童关闭后使用FormClosed事件更新父表单中的按钮：

private void tsmNewEmp_Click(object sender, EventArgs e)
{
    if(NewEmp == null)
    {
        NewEmp = new NewEmployee();
        NewEmp.MdiParent = this;
        NewEmp.FormClosed += FormClosed_1;
    }
    NewEmp.Show();
    tsmNewEmp.Enabled = false;
    tsmNewContract.Enabled = false;
}

private void FormClosed_1(object sender, FormClosedEventArgs e)
{
    tsmNewEmp.Enabled = true;
    tsmNewContract.Enabled = true;
}

Answer 2

Control [] controls = this.MdiParent.Controls.Find（“Menu”，true）;             foreach（在控件中控制ctrl）             {                 if（ctrl.Name ==“Menu”）                 {                     MenuStrip strip = ctrl as MenuStrip;                     strip.Items [“login”]。Enabled = false;                     strip.Items [“logout”]。Enabled = false;                 }             }