如何通过C#获取html页面源代码

Question

I want to save complete web page asp in local drive by .htm from url or url but I did not success.

Code

public StreamReader Fn_DownloadWebPageComplete(string link_Pagesource)
{
     //--------- Download Complete ------------------
     //  using (WebClient client = new WebClient()) // WebClient class inherits IDisposable
     //   {

     //client
     //HttpWebRequest webRequest = (HttpWebRequest)WebRequest.Create(link_Pagesource);

                    //webRequest.AllowAutoRedirect = true;
                    //var client1 = (System.Net.HttpWebRequest)System.Net.WebRequest.Create(link_Pagesource);
                    //client1.CookieContainer = new System.Net.CookieContainer();


                 //   client.DownloadFile(link_Pagesource, @"D:\S1.htm");

              //  }
         //--------- Download Page Source ------------------
 HttpWebRequest URL_pageSource = (HttpWebRequest)WebRequest.Create("https://www.digikala.com");

                    URL_pageSource.Timeout = 360000;
                    //URL_pageSource.Timeout = 1000000;
                    URL_pageSource.ReadWriteTimeout = 360000;
                   // URL_pageSource.ReadWriteTimeout = 1000000;
                    URL_pageSource.AllowAutoRedirect = true;
                    URL_pageSource.MaximumAutomaticRedirections = 300;

                    using (WebResponse MyResponse_PageSource = URL_pageSource.GetResponse())
                    {

                        str_PageSource = new StreamReader(MyResponse_PageSource.GetResponseStream(), System.Text.Encoding.UTF8);
                        pagesource1 = str_PageSource.ReadToEnd();
                        success = true;
                    }

Error :

Too many automatic redirections were attempted.

Attemp by this codes but not successful.

many url is successful with this codes but this url not successful.

Answer 1

here is the way

string url = "https://www.digikala.com/";

using (HttpClient client = new HttpClient())
{
   using (HttpResponseMessage response = client.GetAsync(url).Result)
   {
      using (HttpContent content = response.Content)
      {
         string result = content.ReadAsStringAsync().Result;
      }
   }
}

and result variable will contains the page as HTML then you can save it to a file like this

System.IO.File.WriteAllText("path/filename.html", result);

NOTE you have to use the namespace

using System.Net.Http;

Update if you are using legacy VS then you can see this answer for using WebClient and WebRequest for the same purpose, but Actually updating your VS is a better solution.

Answer 2

using (WebClient client = new WebClient ())
{
    client.DownloadFile("https://www.digikala.com", @"C:\localfile.html");
}

Answer 3

using (WebClient client = new WebClient ())
{
    string htmlCode = client.DownloadString("https://www.digikala.com");
}