c# httpgethtml

c# httpgethtml

public string GetHtmlFromGet(string urlString)
{
//定义局部变量
HttpWebRequest httpWebRequest = null;
HttpWebResponse httpWebRespones = null;
Stream stream = null;
string htmlString = string.Empty;

//请求页面
try
{
httpWebRequest = WebRequest.Create(urlString) as HttpWebRequest;
}
//处理异常
catch (Exception ex)
{
throw new Exception("建立页面请求时发生错误！", ex);
}
httpWebRequest.UserAgent = "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; .NET CLR 2.0.50727; Maxthon 2.0)";
//获取服务器的返回信息
try
{
httpWebRespones = (HttpWebResponse)httpWebRequest.GetResponse();
stream = httpWebRespones.GetResponseStream();
}
//处理异常
catch (Exception ex)
{
throw new Exception("接受服务器返回页面时发生错误！", ex);
}
StreamReader streamReader = new StreamReader(stream,Encoding .UTF8);
//读取返回页面
try
{
htmlString = streamReader.ReadToEnd();
}
//处理异常
catch (Exception ex)
{
throw new Exception("读取页面数据时发生错误！", ex);
}
//释放资源返回结果
streamReader.Close();
stream.Close();
return htmlString;
}