autonumber

[hsachdevah]

Hello,
I am a new guy to xml.
I want to develop a application which saves notes.
so I will be implementing <notes> root in xml with attribute "id"

every time I insert a new node, how can I determine the id of the last node used?

and how can I delete some node for a particular id?

[Dormilich]

that depends largely how you insert the nodes and how you do it (DOM, string insertion (via programming languages), XSLT)

next you have to decide how you want to read the ids (XPath, string) and replace the nodes.

once you know that we can help you much better than some general ideas.

[hsachdevah]

that depends largely how you insert the nodes and how you do it (DOM, string insertion (via programming languages), XSLT)

next you have to decide how you want to read the ids (XPath, string) and replace the nodes.

once you know that we can help you much better than some general ideas.

I will be using asp.net

[Dormilich]

well, I can't help if it comes to ASP.NET specific question, though I'll try if it's something I know (like XSLT, XPath or DOM).

[jkmyoung]

What you ultimately do is find the largest notes id in the document. Assuming id is an attribute in the notes element, find xpath like:

notes[not(@id &lt; //notes/id)]/@id

to get the largest id.