XML HTTPRequest

The XMLHTTPRequest object provides methods that enable you to establish a connection to a file or an object on a web server, such as an ASP page. The two major methods are open() to make the connection and send() to send your request. There are also properties that can be used to read the response: responseText, responseStream, responseXML, and responseBody.

Example

The following example makes a connection with an ASP page. The web page then prepares the XML and returns it. The XMLHTTPRequest property called reposonseXML can be used to access that XML.

Dim objXMLHttp As New XMLHTTPRequest
Dim objDOMDocument As DOMDocument
objXMLHttp.Open "POST", "http://localhost/xmlcode/demo.asp", False
objXMLHttp.Send
Set objDOMDocument= objXMLHttp.responseXML

• Open the POST (or GET) connection to the web server.
• Establish the connection.
• Receive the response.

This manuscript is an abridged version of a chapter from the Manning Publications book XML Programming with VB and ASP. This chapter looks at the Microsoft DOM objects. NOTE: Most images have been removed to increase speed and many of the code comments have also been removed for presentation. Please purchase the book to enjoy the full experience of all the chapters with images and code comments!