VOB.Net XML memory management

Question

Dim docu As New XmlDocument()
docu.load("C:\bigfile.xml")

Dim tempNode As XmlNode
tempNode = docu.SelectSingleNode("/header/type")

someArray(someIndex) = tempNode.innerText

...do something more...

I use XmlDocument()to download a huge document XML(100 ~ 300 MB)

When I open a document and read it as string, my application uses about 900 MB of RAM. I wonder why this is happening and how I can prevent it?

Please note that: does XmlDocumentn’t even have Dispose()to delete selected items. Although I need a whole line of huge XML file in the later part of the application, /header/type.innerTextthis is just one word

---

More source:

Private Sub setInfo(ByVal notePath As String)

        Dim _NOTE As XDocument

        _NOTE = XDocument.Load(notePath)

        If (From node In _NOTE...<title> Select node).Value = "" Then
            lvlist.Items.Add("No Title")
        Else
            lvlist.Items.Add((From node In _NOTE...<title> Select node).Value)
        End If

        lvlist.Items(lvlist.Items.Count - 1).SubItems.Add((From node In _NOTE...<group> Select node).Count)


End Sub

It reads an XML document, counts tags, and retrieves a string value. All this. After these values, _NOTE (XDocument) is useless at this time.

Answer 1

XmlReader, , . MSDN:

, , , XML.

Answer 2

, XmlDocument Dispose. . . , Function , , Function.