多线程问题,程序运行时,还是单线程

多线程问题,程序运行时,还是单线程,窗体就像死了,请哪位老大指点一下,谢谢

最近一直看多线程,感觉高深莫测啊,左看右看,还是不太理解

 

窗体上有二个按钮,一个是把当前时间显示在窗体上,

另一个是向表中插入10000条记录,按下这个按钮同时,则把这个按钮的enable属性设置成false,等10000条数据插入到表中,再把它的enable属性设置 成true

delegate void testdele();
        int intCount = 0;

        TestUsingThread.testthread tt = new testthread();
        public Form1()
        {
            InitializeComponent();
        }
        /// <summary>
        /// 按钮事件
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void btnListNumber_Click(object sender, EventArgs e)
        {         
            ThreadStart ts = new ThreadStart(this.DeleCheck);

            Thread td = new Thread(ts);

            td.Start();
        }

        void DeleCheck()
        {
            testdele testmydele = new testdele(Add);

            this.Invoke(testmydele);
        }
        /// <summary>
        /// 向表中插入10000条记录
        /// </summary>
        void Add()
        {

            btnListNumber.Enabled = false;

            for (int i = 0; i < 10000; i++)
            {
                if (tt.Add(i) > 0)
                {
                    intCount++;
                }
            }

            MessageBox.Show(intCount.ToString());

            btnListNumber.Enabled = true;

        }
        /// <summary>
        /// 把当前时间显示在标签上
        /// </summary>
        private void btnListLable_Click(object sender, EventArgs e)
        {
            labMessage.Text = System.DateTime.Now.ToString();
        }