How Do I...? Common Tasks QuickStart Tutorial

How Do I...Read and Write XML?

This sample illustrates how data can be streamed between components. XML data is parsed by using the XmlReader, and then written out by using the XmlWriter.

VB XMLReadWrite.exe

[This sample can be found at H:\Home\WU_000036_efe47225c86ca62f325a01d8519bc002\Webs\aspnet.sk\quickstarts\QuickStartv20\howto\samples\Xml\XMLReadWrite\
To build this sample, open the SDK command prompt and navigate to the above path. Build the sample using the build tool msbuild passing the solution file as the first parameter: msbuild mySample.sln. The compiled executable will be found in the sub directory \bin directory.]

The following code reads the book price, calculates a discounted price, and then writes a price element that includes the original and discounted prices.

Dim originalPrice As Double = 0.0
originalPrice = reader.ReadElementContentAsDouble()
...
Dim discountedPrice As Double = originalPrice - originalPrice * 0.25
writer.WriteStartElement("price")
writer.WriteAttributeString("alternative", "25% discount")
writer.WriteAttributeString("originalPrice", originalPrice.ToString())
writer.WriteValue(discountedPrice)
writer.WriteEndElement()