Visual Basic.NET How to Program (PDF)

Chapter 18 Extensible Markup Language (XML) 879
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39 http://www.Example.com/clothes/index.jpg
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42 Clearance sale
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45 This is a clearance sale
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48 Free Shipping
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51 Clothes that you would love to wear.
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57 http://www.example.com/action.htm
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Fig. 18.24 BizTalk markup using an offer Schema (part 2 of 2).
All Biztalk documents have the root element BizTalk (line 2). Line 3 defines a default
namespace for the BizTalk framework elements. Element Route (lines 8–14) contains the
routing information, which is mandatory for all BizTalk documents. Element Route also
contains elements To and From (lines 9–12), which specify the document’s destination and
source, respectively. This makes it easier for the receiving application to communicate with
the sender. Attribute locationType specifies the type of business that sends or receives
the information, and attribute locationID specifies a business identity (the unique identifier
for a business). These attributes facilitate source and destination organization. Attribute
handle provides information to routing applications that handle the document.
Element Body (lines 16–69) contains the actual message, whose Schema is defined by
the businesses themselves. Lines 17–18 specify the default namespace for element
Offers (lines 17–68), which is contained in element Body (note that line 18 wraps—if
we split this line, Internet Explorer cannot locate the namespace). Each offer is marked up
using an Offer element (lines 19–67) that contains elements describing the offer. For
additional information on BizTalk, visit www.biztalk.com.