C# 通过代理获取url数据

public static string GetUrl2Data(String url, bool stat)
{
	WebRequest myWebRequest = null;
	WebResponse myWebResponse = null;
	Stream streamResponse = null;
	StreamReader streamRead = null;
	StringBuilder sbuilder = null;
	try
	{
		myWebRequest = WebRequest.Create(url);
		WebProxy myProxy = new WebProxy();
		if (stat == true)//使用代理
		{
			//代理地址
			string proxyAddressPort = Utils.ReadIniData("run", "ProxyAddressPort", "", ROOT + "\\netbench.ini");
			string username = Utils.ReadIniData("run", "ProxyUserName", "", ROOT + "\\netbench.ini");
			string password = Utils.ReadIniData("run", "ProxyPassWord", "", ROOT + "\\netbench.ini");

			Uri newUri = new Uri(proxyAddressPort);
			myProxy.Address = newUri;

			myProxy.Credentials = new NetworkCredential(username, password);
			myWebRequest.Proxy = myProxy;
		}
		else
		{
			myWebRequest.Proxy = myProxy;
		}
		myWebResponse = myWebRequest.GetResponse();

		streamResponse = myWebResponse.GetResponseStream();
		streamRead = new StreamReader(streamResponse);

		Char[] readBuff = new Char[256];
		int count = streamRead.Read(readBuff, 0, 256);
		sbuilder = new StringBuilder();
		while (count > 0)
		{
			sbuilder.Append(new String(readBuff, 0, count));
			count = streamRead.Read(readBuff, 0, 256);
		}
	}
	catch (UriFormatException e)
	{
		Console.WriteLine("\nUriFormatException is thrown.Message is {0}", e.Message);
		Console.WriteLine("\nThe format of the myProxy address you entered is invalid");
	}
	finally
	{
		if (streamResponse != null)
			streamResponse.Close();
		if (streamRead != null)
			streamRead.Close();
		if (myWebResponse != null)
			myWebResponse.Close();
	}
	if (sbuilder != null && !("").Equals(sbuilder.ToString()))
		return sbuilder.ToString();
	else
		return "";
}