从asp.net代码获取一些网站的来源

Is there any way that I could get the source of a website (as a string preferably), let's say www.google.com, from some c# code inside code behind of asp.net website?

有没有什么办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?

edit: of course i mean html code - in every browser you can view it using "view source" in context menu.

编辑:当然我的意思是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。

3 个解决方案

#1

Assuming you want to retrieve the html:

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());
        }
    }
}

#2

For C#, I prefer to use HttpWebRequest over WebClient because you can have more option in the future like having GET/POST parameter, using Cookies, etc.

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。

You can have a shortest explication at MSDN.

您可以在MSDN上进行最短的解释。

Here is the example from MSDN:

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();

#3

it's not the most obvious (and the best) way but i found out that in windows forms you can use WebBrowser control (if you actually need it), fill it's Url property with the url you need and when it's loaded, read the DocumentText property - it contains the html code of the viewed site.

它不是最明显(也是最好)的方式,但我发现在Windows窗体中你可以使用WebBrowser控件(如果你真的需要它),用你需要的url填充它的Url属性,当它加载时,读取DocumentText属性 - 它包含所查看网站的html代码。

#1