p4作業(yè)：

按鈕里的代碼怎么改就行：

?private void button1_Click(object sender, EventArgs e)

????{

?????

??????int clickTimes; //按下du次數(shù)

??????????????//獲取按zhi下次數(shù)

??????object tag = this.button1.Tag;

??????if (tag == null)

??????{

????????clickTimes = 0;

??????}

??????else

??????{

????????clickTimes = Convert.ToInt32(tag);

??????}

??????//增加并記錄按下次數(shù)

??????this.button1.Tag = ++clickTimes;

??????if ((clickTimes % 2) == 1)

??????{

????????//執(zhí)行你的事dao情1

????????string str = comboBox1.Text;

????????time = Convert.ToUInt16(str.Substring(0, 2));

????????progressBar1.Maximum = time;

????????timer1.Start();

????????button1.Text = "停止計時";

??????}

??????else

??????{

????????timer1.Stop();

??????}

????}