c#下实现ping操作

　　这里我写的是一个窗体程序。首先添加textbox,listbox,button控件，其中textbox录入域名或IP，listbox显示结果.

　　在button1_click事件键入

　　private void button1_Click(object sender, EventArgs e)

　　{

　　Ping p1 = new Ping(); //只是演示，没有做错误处理

　　PingReply reply = p1.Send(this.textBox1.Text);//阻塞方式 displayReply(reply); //显示结果 } private void displayReply(PingReply reply) //显示结果

　　{

　　StringBuilder sbuilder ;

　　if (reply.Status == IPStatus.Success)

　　{

　　sbuilder = new StringBuilder();

　　sbuilder.Append(string.Format("Address: {0} ", reply.Address.ToString ()));

　　sbuilder.Append(string.Format("RoundTrip time: {0} ", reply.RoundtripTime));

　　sbuilder.Append(string.Format("Time to live: {0} ", reply.Options.Ttl));

　　sbuilder.Append(string.Format("Don't fragment: {0} ", reply.Options.DontFragment));

　　sbuilder.Append(string.Format("Buffer size: {0} ", reply.Buffer.Length));

　　listBox1.Items.Add(sbuilder.ToString());

　　}

　　}[nextpage]

　　也可以做异步的处理，修改button1_click,并添加PingCompletedCallBack方法

　　private void button1_Click(object sender, EventArgs e)

　　{

　　Ping p1 = new Ping();

　　p1.PingCompleted += new PingCompletedEventHandler(this.PingCompletedCallBack);//设置PingCompleted事件处理程序

　　p1.SendAsync(this.textBox1.Text, null);

　　}

　　private void PingCompletedCallBack(object sender, PingCompletedEventArgs e)

　　{

　　if (e.Cancelled)

　　{

　　listBox1.Items.Add("Ping Canncel");

　　return;

　　}

　　if (e.Error != null)

　　{

　　listBox1.Items.Add(e.Error.Message);

　　return;

　　}

　　StringBuilder sbuilder;

　　PingReply reply = e.Reply;

　　if (reply.Status == IPStatus.Success)

　　{

　　sbuilder = new StringBuilder();

　　sbuilder.Append(string.Format("Address: {0} ", reply.Address.ToString()));

　　sbuilder.Append(string.Format("RoundTrip time: {0} ", reply.RoundtripTime));

　　sbuilder.Append(string.Format("Time to live: {0} ", reply.Options.Ttl));

　　sbuilder.Append(string.Format("Don't fragment: {0} ", reply.Options.DontFragment));

　　sbuilder.Append(string.Format("Buffer size: {0} ", reply.Buffer.Length));

　　listBox1.Items.Add(sbuilder.ToString());

　　}

　　}