c#下实现ping操作代码
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.

　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());
　　}
　　}