private void button1_Click(object sender, EventArgs e)
        {
            string str = textBox1.Text.Trim();

            if (str == "")
            {
                label2.Text = "请输入元素啊!";
                return;
            }
            else
            {
                string[] split = str.Split(new char[] { ',', ' ', '.', ':', });
                L.CreatList(split);
            }
            button2.Enabled = true;
        }
        private void button1_Click(object sender, EventArgs e)
        {
            string str1 = textBox1.Text.Trim();

            if (str1 == "")
            {
                return;
            }
            else
            {
                string[] split = str1.Split(new char[] { ' ', ' ', '.', ':', });
                L1.CreatList(split);
            }
            string str2 = textBox2.Text.Trim();

            if (str2 == "")
            {
                return;
            }
            else
            {
                string[] split = str2.Split(new char[] { ' ', ' ', '.', ':', });
                L2.CreatList(split);
            }
            string str3 = textBox3.Text.Trim();

            if (str3 == "")
            {
                return;
            }
            else
            {
                string[] split = str3.Split(new char[] { ' ', ' ', '.', ':', });
                L3.CreatList(split);
            }
            button2.Enabled = true;
        }