XML management: Use example

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Use example

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XML management: Use example

Overview

This application example manages an XML file named "Orders.xml". This file contains data regarding an order.

This example shows how to handle XML files using character strings.

Sample content of "orders.xml":

Use example

The following WLanguage code is used to:

create an XML document from the "Orders.XML" file:
// Retrieve the XML content of "orders.xml" file
MyXMLSource is string = fLoadText("C:\MyOrders\Orders.xml")
// Create the XML document
XMLDocument("XMLOrd", MyXMLSource)
IF ErrorOccurred = True THEN
Error("Error while creating the XML document")
RETURN
END
browse the XML document and retrieve the content of its elements:
// Positions on the "" element
XMLFirst("XMLOrd")
// Moves one level down and positions on the "" element
XMLChild("XMLOrd")
// Retrieves the order number
OrdNum is int = Val(XMLData("XMLOrd")) // contains 1
// Positions on the next element
XMLNext("XMLOrd")
// Retrieves the order date
OrdDate is string = XMLData("XMLOrd") // "11/20/2002"
find an element in the XML document and retrieve its content:
// Find the product code
XMLFind("XMLCde", "productcode", XMLTag + XMLCurrentLevel + XMLChildItem)
IF XMLFound ("XMLCde") = True THEN
PC is string = XMLData("XMLOrd") // contains "CDR-1080"
END
add elements into the XML document:
// Add a new order line
XMLParent("XMLOrd")
XMLParent("XMLOrd")
XMLAddChild("XMLOrd", "orderline", "", True)
XMLAddAttribute("XMLOrd", "number", "2")

// Add the "productcode" tag
XMLAddChild("XMLOrd", "productcode", "sro2125")

// Add the "description" tag
XMLAddChild("XMLOrd", "description", "optical mouse")

// Add the "quantity" tag
XMLAddChild("XMLOrd", "quantity", "15")
save the modifications made to the XML file:
// Format the content of the XML document
XMLFile is string = XMLBuildString("XMLOrd")

// Save the XML file
fSaveText("C:\MyOrders\Orders.xml", XMLFile)
close the XML document and display the result:
//Close the document
XMLClose("XMLOrd")

// Display the data
Info("Order Number: " + OrdNum, "Order date: " + OrdDate, "Product code: " + PC)