Downloading Web Pages in VB.NET

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• JS

  James Sumner16y agoeditedPosted Dec 28, 2009, 1:08 AMEdited Dec 28, 2009, 5:07 AM

  Hey There, Thanks for the example but it throws a few errors I have adapted it to a form appliaction but it works just the same. Hope this helps anyone who had the same problems as I did. 'an example website that will always be there ;D Dim URL As String = "http://www.google.co.nz/" Dim request As HttpWebRequest = WebRequest.Create(URL) Dim response As HttpWebResponse Try response = request.GetResponse() Dim reader As StreamReader = New StreamReader(response.GetResponseStream()) Dim str As String = reader.ReadLine() ' speed up process TextBox1.Text = reader.ReadToEnd 'if error occurs then application doesnt crash Catch MessageBox.Show("Error Getting Webpage") End Try Hope it helps Sumn3rd
• TF

  Tore Forsgren16y agoPosted Dec 27, 2009, 2:01 AM

  The downloaded file may probably contain empty lines. To be sure the entire file is downloaded use: Do While Not reader.EndOfStream Console.WriteLine(reader.ReadLine()) Loop
• T

  Teoman17y agoPosted Sep 27, 2009, 2:01 PM

  Good article but httpwebrequest freezes program.What is the solution?
• NR

  narini rosli18y agoPosted Nov 6, 2008, 4:21 AM

  Thanks for sharing. But, just like Ahmad's query, how to i download the file from a protected site. The file that i want to query is an XML file, and the data will be constantly change every few seconds. Can i use the Webclient method to query the XML file in real time , and how do i do it? I would need to key in Login ID and password as well. Thanks. ;)
  • NR

    narini rosli18y agoPosted Nov 6, 2008, 4:25 AM

    currently what i have is this, but it doesn't work: Dim x As New WebClient Dim prox = x.Proxy With prox .Credentials = New NetworkCredential(admin, admin) End With x.DownloadFile("http://127.0.0.1:8550/epe/pos/taglist?name=RPTag&fields=all", "C:\Documents and Settings\60332\Desktop\FYP- Netty\FYP_VB\XML files\taglist.xml") please help. Thanks.
• AT

  Ahmad Tasnim18y agoPosted Sep 2, 2008, 2:19 AM

  After login i tried to download the files but i am not able to download. Link at top right is not clickable :(
• AT

  Ahmad Tasnim18y agoPosted Sep 2, 2008, 2:17 AM

  After login i tried to download the files but i am not able to download. Link at top right is not clickable :(
• U

  UnScripted18y agoPosted Jan 22, 2008, 7:15 AM

  Your article is good, i want to have a quick question. For suppose i want to login to a site and then download a webpage how can i perform the task.
• HP

  hardik patel19y agoPosted Nov 15, 2007, 12:54 PM

  Good article I have files on website in zip format ..I am using webrequest and webresponse .but I want to stored zip files in my local directory..I am not allowed to add any class (open sourse) any idea how to do it??
• PB

  Paul Barrington19y agoeditedPosted Sep 20, 2007, 11:39 AMEdited Sep 20, 2007, 11:42 AM

  Good article, very comprehensive. I cut and paste the code to my IDE. Build is successful, but no output shows on the cmd window when I run it?!?!? Immediate window displays the following: A first chance exception of type 'System.InvalidCastException' occurred in ConsoleApplication1.exe
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    Mahesh Chand19y agoPosted Sep 27, 2007, 11:28 AM

    We do not have this page on C# Corner any more. Dim URL As String = http://www.c-sharpcorner.com/default.asp You need to find a correct URL then it should work. Try http://www.c-sharpcorner.com/default.aspx
• FF

  ff ff19y agoPosted Sep 1, 2007, 7:23 PM

  Hi! I'm trying all the tips you've post here, but I have an issue. All code works with HTTP sites, but did not work with HTTPS sites. the exception is: the underlying connection was closed: could not establish trust relationship with remote server". Could you please help me? thank you very much for the article!
• MC

  maria carolin20y agoPosted Aug 24, 2006, 2:19 AM

  how to download all the web pages of a site once through c# coding .net
• MC

  maria carolin20y agoPosted Aug 24, 2006, 2:18 AM

  how to download web pages of a site through c# coding .net