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Insert a child node into a XML document

Posted on 2001-09-12
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Last Modified: 2012-08-13
I have a XML document with formated:

<MyList>
 <MyGroup>
  <GroupID>1</GroupID>
  <GroupName>Name 1</GroupName>
 </MyGroup>
 <MyGroup>
  <GroupID>1</GroupID>
  <GroupName>Name 2</GroupName>
 </MyGroup>
 <MyGroup>
  <GroupID>2</GroupID>
  <GroupName>Name 4</GroupName>
 </MyGroup>
</MyList>

Suppose I have a new node(GroupID = 1, GroupName = Name 5). How could I insert the new node into the XML doc, at the end of nodes have GroupID = 1 (and ofcourse, before the node has GroupID = 2)

Thanks in advance
nguyenn
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Question by:nguyenn
  • 2
3 Comments
 
LVL 75

Accepted Solution

by:
Anthony Perkins earned 400 total points
ID: 6477337
im xmldoc As MSXML2.DOMDocument

' Load the XML document
Set xmldoc = New MSXML2.DOMDocument
xmldoc.Load "c:\temp\temp.xml"

AddNode xmldoc, "1", "Name 5"
Debug.Print xmldoc.xml

AddNode xmldoc, "3", "Name 6"
Debug.Print xmldoc.xml

Set xmldoc = Nothing

End Sub

Sub AddNode(xmldoc As MSXML2.DOMDocument, ByVal GroupID As String, ByVal GroupName As String)
Dim xmlNewNode As MSXML2.IXMLDOMNode
Dim xmlNode As MSXML2.IXMLDOMNode
Dim Done As Boolean

' Create the node
Set xmlNewNode = xmldoc.createNode(NODE_ELEMENT, "MyGroup", vbNullString)
Set xmlNode = xmlNewNode.appendChild(xmldoc.createNode(NODE_ELEMENT, "GroupID", vbNullString))
xmlNode.Text = GroupID
Set xmlNode = xmlNewNode.appendChild(xmldoc.createNode(NODE_ELEMENT, "GroupName", vbNullString))
xmlNode.Text = GroupName

' Find the node to insert by looping through all the MyGroup siblings
' Note this could probably be improved by searching for the element that has GroupID + 1
Set xmlNode = xmldoc.selectSingleNode("/MyList/MyGroup")
Done = False
Do While Not xmlNode Is Nothing And Not Done
   If CLng(xmlNode.childNodes(0).Text) > CLng(GroupID) Then
      Done = True
   Else
      Set xmlNode = xmlNode.nextSibling
   End If
Loop
xmldoc.documentElement.insertBefore xmlNewNode, xmlNode

End Sub
0
 
LVL 75

Expert Comment

by:Anthony Perkins
ID: 6477339
Let's try again:

Private Sub Command1_Click()
Dim xmldoc As MSXML2.DOMDocument

' Load the XML document
Set xmldoc = New MSXML2.DOMDocument
xmldoc.Load "c:\temp\temp.xml"

AddNode xmldoc, "1", "Name 5"
Debug.Print xmldoc.xml

AddNode xmldoc, "3", "Name 6"
Debug.Print xmldoc.xml

Set xmldoc = Nothing

End Sub

Sub AddNode(xmldoc As MSXML2.DOMDocument, ByVal GroupID As String, ByVal GroupName As String)
Dim xmlNewNode As MSXML2.IXMLDOMNode
Dim xmlNode As MSXML2.IXMLDOMNode
Dim Done As Boolean

' Create the node
Set xmlNewNode = xmldoc.createNode(NODE_ELEMENT, "MyGroup", vbNullString)
Set xmlNode = xmlNewNode.appendChild(xmldoc.createNode(NODE_ELEMENT, "GroupID", vbNullString))
xmlNode.Text = GroupID
Set xmlNode = xmlNewNode.appendChild(xmldoc.createNode(NODE_ELEMENT, "GroupName", vbNullString))
xmlNode.Text = GroupName

' Find the node to insert
Set xmlNode = xmldoc.selectSingleNode("/MyList/MyGroup")
Done = False
Do While Not xmlNode Is Nothing And Not Done
   If CLng(xmlNode.childNodes(0).Text) > CLng(GroupID) Then
      Done = True
   Else
      Set xmlNode = xmlNode.nextSibling
   End If
Loop
xmldoc.documentElement.insertBefore xmlNewNode, xmlNode

End Sub
0
 
LVL 1

Author Comment

by:nguyenn
ID: 6477413
Thanks for your excellent codes, Acperkins. You help me solve out the problem

I very appreciate your help, and have a nice day :)
nguyenn
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