Reading XML Document in .Net

There are 3 preferable ways to read XML document.

• XMLDocument Class - It allows to insert, update, delete or move a node.
• XMLTextReader Class - It allows read data in fast forward-only manner.
• XMLValidatingReader Class - It allows to validate XML document against Document Type Definition (DTD), XML Schema definition(XSD) and XML Data Reduced(XDR).
  

XMLTextReader and XMLValidatingReader Class is derived from XMLReader class which provides

• fast,
  
• non-cacheable,
  
• read-only, and
  
• forward-only access to XML data.

Choosing between XMLDocument, XMLTextReader and XMLValidatingReader Class.

• Use XMLDocument when
• You want to perform operation like Insert, Update and delete.
• Memory is not a constraint
  
• Use XMLTextReader when
• You want to read data in forward-only manner.
• When memory is constraint.
• Use XMLValidatingReader when
• You want to validate XML document against DTD, XSD and XDR.