HTTP GET - Download and Parse HTML

Downloads an HTML page from the Singapore Exchange and parses a row of options prices from an HTML table.

Download Chilkat .NET for 2.0 / 3.5 Framework

Download Chilkat .NET for 1.0 / 1.1 Framework

Chilkat.Http http = new Chilkat.Http();

bool success;

//  Any string unlocks the component for the 1st 30-days.
success = http.UnlockComponent("Anything for 30-day trial");
if (success != true) {
    MessageBox.Show(http.LastErrorText);
    return;
}

//  Send the HTTP GET and return the content in a string.
string html;
html = http.QuickGetStr("http://esite.sgx.com/live/dt/DTFuture.asp?JBFE");

//  Use the Chilkat HTML-to-XML component to convert
//  the HTML to parsable XML:
Chilkat.HtmlToXml htmlToXml = new Chilkat.HtmlToXml();

//  Any string argument automatically begins the 30-day trial.

success = htmlToXml.UnlockComponent("30-day trial");
if (success != true) {
    MessageBox.Show("HtmlToXml component unlock failed");
    return;
}

//  Indicate the charset of the output XML we'll want.
htmlToXml.XmlCharset = "utf-8";

//  Set the HTML:
htmlToXml.Html = html;

//  We won't need the scripts or images, so drop those tags...
htmlToXml.DropTagType("img");
htmlToXml.DropTagType("script");

//  Get the XML:
string xmlStr;
xmlStr = htmlToXml.ToXml();

//  Load the XML into the Chilkat XML parser:
Chilkat.Xml xml = new Chilkat.Xml();
xml.LoadXml(xmlStr);

//  success = xml.SaveXml("out.xml");

Chilkat.Xml node = null;

//  Find a known point in the XML.  In this case we'll look for the text node
//  containing this string: "Chg From Prev Settle"
node = xml.SearchForContent(null,"text","Chg From Prev Settle");
if (node == null ) {
    MessageBox.Show("Did not find Chg From Prev Settle");
    return;
}

//  Move up to the TD node:
node.GetParent2();

//  Move up to the TR node:
node.GetParent2();

//  Move to the next row (i.e. next TR)
node.NextSibling2();

node.FirstChild2();
node.NextSibling2();

textBox1.Text += "Expire Month/Year: " + node.GetChildContent("text") + "\r\n";
node.NextSibling2();

textBox1.Text += "Last: " + node.GetChildContent("text") + "\r\n";
node.NextSibling2();

textBox1.Text += "Change: " + node.GetChildContent("text") + "\r\n";
node.NextSibling2();

//  ...

success = node.SaveXml("row.xml");