Downloading a web page in Visual Basic 2008

Microcontrolled

I am wondering how I should download a webpage in VB 2008 given the URL in·a string format and outputing the downloaded webpage (html & other script) in a string format as well. Can someone tell me how this should be done?

Thanks,
Micro

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Unsoundcode

Hi Microcontrolled , I am assuming you want to view the web page plus view the source . Create a new VB application and from the toolbox drag over 1 button , 1 textbox , 1 webrowser and 1 richtextbox and arrange them how you would like.
The following is all the code needed for a simple example

[color=#0000ff][color=#0000ff]Private[/color][/color] [color=#0000ff][color=#0000ff]Sub[/color][/color] Button1_Click([color=#0000ff][color=#0000ff]ByVal[/color][/color] sender [color=#0000ff][color=#0000ff]As[/color][/color] System.Object, [color=#0000ff][color=#0000ff]ByVal[/color][/color] e [color=#0000ff][color=#0000ff]As[/color][/color] System.EventArgs) [color=#0000ff][color=#0000ff]Handles[/color][/color] Button1.Click
[color=#0000ff][color=#0000ff]Dim[/color][/color] page_url [color=#0000ff][color=#0000ff]As[/color][/color] [color=#0000ff][color=#0000ff]String[/color][/color] = TextBox1.Text
WebBrowser1.Navigate(page_url)
[color=#0000ff][color=#0000ff]End[/color][/color] [color=#0000ff][color=#0000ff]Sub[/color][/color]
 
[color=#0000ff][color=#0000ff]Private[/color][/color] [color=#0000ff][color=#0000ff]Sub[/color][/color] WebBrowser1_DocumentCompleted([color=#0000ff][color=#0000ff]ByVal[/color][/color] sender [color=#0000ff][color=#0000ff]As[/color][/color] [color=#0000ff][color=#0000ff]Object[/color][/color], [color=#0000ff][color=#0000ff]ByVal[/color][/color] e [color=#0000ff][color=#0000ff]As[/color][/color] System.Windows.Forms.WebBrowserDocumentCompletedEventArgs) [color=#0000ff][color=#0000ff]Handles[/color][/color] WebBrowser1.DocumentCompleted
[color=#0000ff][color=#0000ff]Dim[/color][/color] pagesource [color=#0000ff][color=#0000ff]As[/color][/color] [color=#0000ff][color=#0000ff]String[/color][/color] = WebBrowser1.DocumentText
RichTextBox1.Text = pagesource
[color=#0000ff][color=#0000ff]End[/color][/color] [color=#0000ff][color=#0000ff]Sub[/color][/color]

type the url in textbox1 and click button1

Jeff T.

Microcontrolled

Wow, thanks!! I'll try that out!

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Post Edited (Microcontrolled) : 4/24/2010 11:30:17 PM GMT

Unsoundcode

As a side note , if the WebBrowser is not already in your VB toolbox here is what you should do.

Right click on the toolbox area

Select "Choose Items..."

Under the ".NET Framwork Components" tab scroll down to WebBrowser

Place a check in the checkbox and click OK

Jeff T.

localroger

uC'ed, I use a standard command prompt application called "httpget." There are several implementations free for downloading, easily found via the mighty GOOG. I shell to it with a command line specifying the URL and file I want. This has the advantage of not tying up the application thread if there is a delay in the networking.