c# 请求网页 用get 或者post

string url = "www.baidu.com";  
    string url2="www.xxxx.com";
    string url3 ="www.xxxx2.com"
    .......
WebRequest request = WebRequest.Create(url);  
WebResponse response = request.GetResponse();  
Stream s = response.GetResponseStream();  
StreamReader sr = new StreamReader(s, Encoding.GetEncoding("gb2312"));  
MessageBox.Show(sr.ReadToEnd());  
sr.Dispose();  
sr.Close();  
s.Dispose();  
s.Close();  

请问下 我怎么把那三条url 一起执行一遍呢? 放到数组里面去吗？

string url = "www.baidu.com";

string url2="www.xxxx.com";
string url3 ="www.xxxx2.com";
string[] urls = { url, url1, url2 };
foreach (var u in urls)
{
WebRequest request = WebRequest.Create(u);

WebResponse response = request.GetResponse();

Stream s = response.GetResponseStream();

StreamReader sr = new StreamReader(s, Encoding.GetEncoding("gb2312"));

MessageBox.Show(sr.ReadToEnd());

sr.Dispose();

sr.Close();

s.Dispose();

s.Close();
}

放数组循环调用方法 来请求