Ping in C #

First add the Textbox,listbox,button control, where the textbox enters the domain name or the ip,listbox displays the result.

In the Button1_Click event type

private void Button1_Click (object sender, EventArgs e)

{

ping P1 = new Ping (); Just demo, do not do error handling

pingreply reply = p1. Send (This.textBox1.Text);//Blocking mode displayreply (reply); Display results} private void Displayreply (pingreply Reply)//Display results

{

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 ());

}

}

You can also do asynchronous processing, modify button1_click, and add Pingcompletedcallback methods

private void Button1_Click (object sender, EventArgs e)

{

ping P1 = new Ping ();

P1. pingcompleted + = new Pingcompletedeventhandler (this. Pingcompletedcallback);//Set pingcompleted event handler

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 ());

}

}