从asp.net代码获取一些网站的来源

Question

有没有什么方法可以获得一个网站的来源(最好是一个字符串),让我们说www.google.com,来自asp.net网站背后代码中的一些c#代码？

编辑:我当然是指html代码 - 在每个浏览器中,你可以使用上下文菜单中的"查看源代码 " 查看它.

Answer 1

假设您要检索html:

class Program
{
    static void Main(string[] args)
    {
        using (WebClient client = new WebClient())
        using (Stream stream = client.OpenRead("http://www.google.com"))
        using (StreamReader reader = new StreamReader(stream))
        {
            Console.WriteLine(reader.ReadToEnd());
        }
    }
}

Answer 2

对于C#,我更喜欢在WebClient 上使用HttpWebRequest,因为您可以在将来拥有更多选项,例如使用GET/POST参数,使用Cookie等.

您可以在MSDN上进行最短的解释.

以下是MSDN的示例:

        // Create a new HttpWebRequest object.
        HttpWebRequest request=(HttpWebRequest) WebRequest.Create("http://www.contoso.com/example.aspx");    

        // Set the ContentType property. 
        request.ContentType="application/x-www-form-urlencoded";
        // Set the Method property to 'POST' to post data to the URI.
        request.Method = "POST";
        // Start the asynchronous operation.    
        request.BeginGetRequestStream(new AsyncCallback(ReadCallback), request);    

        // Keep the main thread from continuing while the asynchronous
        // operation completes. A real world application
        // could do something useful such as updating its user interface. 
        allDone.WaitOne();

        // Get the response.
        HttpWebResponse response = (HttpWebResponse)request.GetResponse();
        Stream streamResponse = response.GetResponseStream();
        StreamReader streamRead = new StreamReader(streamResponse);
        string responseString = streamRead.ReadToEnd();
        Console.WriteLine(responseString);
        // Close the stream object.
        streamResponse.Close();
        streamRead.Close();

        // Release the HttpWebResponse.
        response.Close();