Question

我正在使用Ping中的System.Net.NetworkInformation类，我需要将一些字符串数据发送到PingCompleted事件处理程序的事件函数。我试过这个：

void ex_ping_PingCompleted(object sender, PingCompletedEventArgs e, string adress)
{

}

...

ex_ping.PingCompleted += (sender1, args) => ex_ping_PingCompleted(sender1, new 
PingCompletedEventArgs(), adress);

但它告诉我PingCompletedEventArgs没有构造函数。我试图制作自己的事件args：

public class ProgressEventArgs : PingCompletedEventArgs
{
            public string adress;
            public ProgressEventArgs(string ex_adress)
            {
                adress = ex_adress;
            }
}

这里的错误相同。我只是想知道我所说的地址，事件函数中的e.Reply.Address给了我IP，我需要网站名称。

编辑：我自己想出来了：

 ex_ping.PingCompleted += (sender1, args) => ex_ping_PingCompleted(sender1, args,adress); 

    void ex_ping_PingCompleted(object sender, PingCompletedEventArgs e,string ex_adress)        {
    }

工作正常，/ close

Answer 1

订阅活动

 ex_ping.PingCompleted += ex_ping_PingCompleted;

在处理程序中获取地址

void ex_ping_PingCompleted(object sender, PingCompletedEventArgs e)
{
   // verify if operation was not canceled or some error occured

   var address = e.Reply.Address;
   IPHostEntry entry = Dns.GetHostEntry(address);
   var siteName = entry.HostName;
}

Answer 2

你在UserState财产之后：

void Ping()
{
    string address = "google.com";
    ex_ping.PingCompleted+=ex_ping_PingCompleted;
    ex_ping.SendAsync(address, 500, buffer, options, address);
}

void ex_ping_PingCompleted(object sender, PingCompletedEventArgs e)
{
    // Will give you the hostname
    var address = e.UserState;
}

在定义的事件函数中发送参数

2 个答案: