XmlProcessingInstruction Class
A class that defines a Processing Instruction node.
The XML prologue (<? Xml version = “1.0”?> Part) is also a processing instruction in XML syntax, but because it is processed specially, the corresponding Processing Instruction node is not generated. Also, if you refer to the XML source with the XmlNode.Xml property, which is a specification specific to Biz / Browser, the prologue part will be added automatically. Therefore, when outputting XML to a file etc., it is not necessary to add a Processing Instruction node for prologue.
If you want to include your own processing instructions as part of the DOM tree, create an XmlProcessingInstruction object with the XmlDocument.CreateProcessingInstruction method and connect to the DOM tree with methods such as XmlNode.AppendChild, XmlNode.InsertBefore, and XmlNode.ReplaceChild.
Default properties and ValueType
The default property is NodeName. The ValueType specification is invalid.