通过域名获取IP［转帖］

public string GetIPByDomain(string url)
{
    if (url.Trim() == string.Empty)
        return "";
    try
    {
        System.Net.IPHostEntry host = System.Net.Dns.GetHostEntry(url);
        return host.AddressList.GetValue(0).ToString();
    }
    catch (Exception e)
    {
        throw e;
    }
}
调用方法： 

GetIPByDomain("www.it55.com");

转自：http://www.chenjiliang.com/Article/View.aspx?ArticleID=4150&TypeID=84