private void Form1_Load(object sender, EventArgs e)
        {
            timer1.Start();

            timer2.Start();
        }
        string T = "苟利国家生死以，" + "\r\n" + "岂因祸福避趋之。"; int i = 0;
        private void timer1_Tick(object sender, EventArgs e)
        {
            string s;
            s = T.Substring(i, 1);
            textBox1.Text += s;
            label1.Text = T.Length + "----" + i.ToString();
            textBox1.SelectionStart = textBox1.TextLength;
            i++;
            if (i > T.Length-1)
            {
                i = 0;
                s = "";
                textBox1.Text = "";
               
                timer1.Stop();
                timer2.Start();

            
            }





        }

        private void timer2_Tick(object sender, EventArgs e)
        {

            timer2.Stop();
            timer1.Start();

      

        }

    }
}

 结果是最后一个句号显示不出来，求高手解决？？？？！！！

 

看不明白第二个计时器是干什么用的

        private void timer1_Tick(object sender, EventArgs e)
        {
            string s;
            if (i < T.Length)
            {
                s = T.Substring(i, 1);
                textBox1.Text += s;
                label1.Text = T.Length + "----" + i.ToString();
                textBox1.SelectionStart = textBox1.TextLength;
            }
            i++;
            if (i > T.Length)
            {
                i = 0;
                s = "";
               
                textBox1.Text = "";

                timer1.Stop();
                timer2.Start();
            }
        }