<winform>巧妙利用Timer

       如果在同一台电脑上，必须实现两个application间通信时，又不想用UDP和TCP等协议，可以用文本来代替。可以用Timer来巧妙的实现，实现代码既简单又高效。我在程序中设计了两个Timer，第一个用来计算次数，第二个用来接受信息。其中第二个从开始就一直设置为True，例如代码如下：

 timer2.Enabled = true; 

      其中第一个Timer代码如下，只要用来设置时间间隔和计量次数，代码如下：

private void timer1_Tick(object sender, EventArgs e)

        {

            if(time == 1)

            {

                 timer1.Interval = 1500;

                 counter++;

                 textBox1.Text = Convert.ToString(counter);




                 if(counter > 9)

                 {

                     timer1.Enabled = false;

                     textBox2.Text = "INC : Increasing ";




                     StreamWriter aw = new StreamWriter("d://c.text");

                     aw.WriteLine("2");

                     aw.Close();

                 }                          //In timer1 digital growth  

            }

            else if(time == 2)

            {

                 timer1.Interval = 2000;

                 counter--;

                 textBox1.Text = Convert.ToString(counter);

                 while (counter < 0)

                 {

                     StreamWriter aw = new StreamWriter("d://c.text");

                     aw.WriteLine("8");

                     aw.Close();




                      Close();

                 }                          //In timer1 digital reduce

            }

        }

第二个Timer是用来接受信息的，就是用来代替Socket等套接字的。它的代码如下：

 private void timer2_Tick(object sender, EventArgs e)

        {

            if(File.Exists(@"d://d.text"))

            {                               //Whether have the information the file

                using (StreamReader ar = new StreamReader("d://d.text"))

                {

                    string line;

                    if((line =ar.ReadLine()) != null)

                    {

                        num = Convert.ToInt32(line);

                        ar.Close();    //Read in information

                    }

                }

                switch (num)         //According to information change

                {

                    case 0:

                        btnClose_Click(sender, e);

                        Close();

                        break;

                    case 1:

                        textBox2.Text = "INC & DEC: Decreasing";

                        timer1.Enabled = true;

                        time = 2;

                        break;

                    case 2:

                        timer1.Enabled = false;

                        btnStart.Enabled = true;

                        btnStop.Enabled = false;

                        textBox2.Text = "INC & DEC: Stop Increasing ";

                        break;

                    case 3:

                        btnStop.Enabled = false;

                        textBox2.Text = "INC :Stop Increasing ";

                        break;

                    case 4:

                        btnStop.Enabled = true;

                        textBox2.Text = "INC :Increasing ";

                        break;

                    case 5:

                        btnStop.Enabled = false;

                        btnStart.Enabled = true;

                        timer1.Enabled = false;

                        textBox2.Text = "INC & DEC:Stop Decreasing ";

                        break;

                    case 6:

                        num = 0;

                        counter = 0;

                        textBox1.Text = "0";

                        textBox2.Text = "Initial state ";

                        btnClose.Enabled = true;

                        btnStart.Enabled = true;

                        btnStop.Enabled = false;

                        btnReset.Enabled = false;

                        timer1.Enabled = false;

                        time = 1;

                        break;

                    default:

                        break;

                }

                File.Delete(@"d://d.text");  // Delete information file

            }

        }

    }

}