Tutorial :How to get the webpage source in ASP.NET C#?



Question:

How can I get the HTML code of a page in C# ASP.NET?

Example: http://google.com

How I can get this HTML code by ASP.NET C#?


Solution:1

The WebClient class will do what you want:

string address = "http://stackoverflow.com/";       using (WebClient wc = new WebClient())  {      string content = wc.DownloadString(address);  }  

As mentioned in the comments, you might prefer to use the async version of DownloadString to avoid blocking:

string address = "http://stackoverflow.com/";    using (WebClient wc = new WebClient())  {      wc.DownloadStringCompleted +=          new DownloadStringCompletedEventHandler(DownloadCompleted);      wc.DownloadStringAsync(new Uri(address));  }    // ...    void DownloadCompleted(object sender, DownloadStringCompletedEventArgs e)  {      if ((e.Error == null) && !e.Cancelled)      {          string content = e.Result;      }  }  


Solution:2

MSDN example of HttpWebrequest.GetResponse has working code.

http://msdn.microsoft.com/en-us/library/system.net.httpwebrequest.getresponse.aspx


Solution:3

If the question is "How to get the code-behind file of a web page", the answer is no.


Solution:4

If you are planning to do a lot of web requests to access RESTful services, be careful with the HttpWebRequest object. It takes a while to be reclaimed, and if you have enough traffic (just a few calls a minute), you can start to get strange behavior.

If you are loading other pages dynamically, I'd recommend doing it in JavaScript.


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