Source code to text file not working using C#.net and Web browser?

Question

This source code scraping is not working; it's giving a blank text file as output:

private void button2_Click(object sender, EventArgs e)
{
    webBrowser1.Navigate("https://www.jigsaw.com/SearchCompany.xhtml?opCode=refresh&rpage=20&order=0&orderby=0&industry=1160000&subindustry=1160300&country=9000&country=2000&cmDead=false&count=0&screenNameType=0&screenName=&omitScreenNameType=0&omitScreenName=&rowsPerPage=200&uid=13473859&tok=1354716874406-8761960955252771794");

    string MainsourceCode = webBrowser1.DocumentText;
    StreamWriter sw = new StreamWriter("G:/jigsaw_info.txt", true);
    sw.Write(MainsourceCode + "\n");
    sw.Close();
}

L.B · Accepted Answer · 2012-12-05T16:55:39.577

2

You are starting to write too fast. You should wait DocumentCompleted event.

private void button2_Click(object sender, EventArgs e) 
{ 
    webBrowser1.DocumentCompleted += webBrowser1_DocumentCompleted;
    webBrowser1.Navigate("https://www.jigsaw.com/SearchCompany.xhtml?opCode=refresh&rpage=20&order=0&orderby=0&industry=1160000&subindustry=1160300&country=9000&country=2000&cmDead=false&count=0&screenNameType=0&screenName=&omitScreenNameType=0&omitScreenName=&rowsPerPage=200&uid=13473859&tok=1354716874406-8761960955252771794");
}

void webBrowser1_DocumentCompleted(object sender, WebBrowserDocumentCompletedEventArgs e)
{
      File.WriteAllText("G:/jigsaw_info.txt",webBrowser1.DocumentText);    
}

edited Dec 05 '12 at 16:55

answered Dec 05 '12 at 16:27

L.B

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can you be more clear, Do u want me to move all the above code in those braces? sorry i'm new to coding. please help – Dec 05 '12 at 16:32
`private void button2_Click(object sender, EventArgs e) { webBrowser1.Navigate("URL"); string MainsourceCode = webBrowser1.DocumentText; webBrowser1.DocumentCompleted += webBrowser1_DocumentCompleted; void webBrowser1_DocumentCompleted(object sender, WebBrowserDocumentCompletedEventArgs e) { File.WriteAllText("G:/jigsaw_info.txt",webBrowser1.DocumentText); } } } }` – Dec 05 '12 at 16:50
@SantoshKumar You sould attach to event before `Navigate` See my new code above. It works. – L.B Dec 05 '12 at 16:53
@SantoshKumar That's all I can do. I gave a full working code. I hope you get better answers. – L.B Dec 05 '12 at 16:58

score 0 · Answer 2 · edited May 23 '17 at 12:30

0

You have to wait until navigation is complete. Navigation is asynchronous.

Detect WebBrowser complete page loading

edited May 23 '17 at 12:30

Community

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answered Dec 05 '12 at 16:27

RQDQ

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Source code to text file not working using C#.net and Web browser?

2 Answers2