Question : Difference between XmlDocument and XmlDataDocument in .NET

Could you please anybody tell me what is difference between XmlDocument class and XmlDataDocument class??  When we use XmlDocument and XmlDataDocment?

thanks in advance,

Senthil

Answer : Difference between XmlDocument and XmlDataDocument in .NET

XmlDocument represents an XML document

XmlDataDocument allows structured data to be stored, retrieved, and manipulated through a relational DataSet

XMLDataDocument is an extension of the XMLDocument base class and can be used to mix XML and relational views of  the underlying data.

You would use XMLDataDocument as you would do when trying to manipulate a database table through a dataset - you pass the table into the dataset and can then use the dataset in tables/ dropdownlists etc. See the following article for more info on how to use it:
http://www.vbip.com/books/1861005555/chapter_5555_05.asp

Finally, a lot of websites will recommend against using the XMLDocument class and to use XMLReader instead if you want to read information only from an XML doc.

Hope this helps,
mcg