split xml document into chunks

Question

I have a large xml document that needs to be processed 100 records at a time

It is being done within a Windows Service written in c#.

The structure is as fo

Answer 1

Another naive solution; this time for .NET 2.0. It should give you an idea of how to go about what you want. Uses Xpath expressions instead of Linq to XML. Chunks a 100 order docket into 10 dockets in under a second on my devbox.

 public List ChunkDocket(XmlDocument docket, int chunkSize)
    {
        List newDockets = new List();
        //            
        int orderCount = docket.SelectNodes("//docket/order").Count;
        int chunkStart = 0;
        XmlDocument newDocket = null;
        XmlElement root = null;
        XmlNodeList chunk = null;

        while (chunkStart < orderCount)
        {
            newDocket = new XmlDocument();
            root = newDocket.CreateElement("docket");
            newDocket.AppendChild(root);

            chunk = docket.SelectNodes(String.Format("//docket/order[position() > {0} and position() <= {1}]", chunkStart, chunkStart + chunkSize));

            chunkStart += chunkSize;

            XmlNode targetNode = null;
            foreach (XmlNode c in chunk)
            {
                targetNode = newDocket.ImportNode(c, true);
                root.AppendChild(targetNode);
            }

            newDockets.Add(newDocket);
        } 

        return newDockets;
    }