c#下实现ping操作

时间：2011-03-15 来源：观海看云

C# ping命令实现：利用c#2.0新增的Ping类

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());
}
}

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());   
    
    }   
    
}