XmlDocument in Outlook VBA - vba

Question

I am trying to adapt this answer, which I believe is in VB.NET, for use with Outlook VBA.
I made some progress by getting the syntax corrected for VBA, but I do not know how to resolve "Compile error: User-defined type not defined" on the line
Dim CurrentXML As XmlDocument
Tool > References includes Microsoft XML, v6.0 but searching for XmlDocument in Object Browser returns no results.
The complete code is as follows:
Sub Search2()
' https://stackoverflow.com/a/50145011/18573
Dim sFilter As String
Dim CurrentExplorer As Outlook.Explorer
Set CurrentExplorer = Nothing
Dim CurrentView As Outlook.View
Set CurrentView = Nothing
' ERROR ON THE FOLLOWING LINE
Dim CurrentXML As XmlDocument
Set CurrentXML = New XmlDocument
Dim CurrentFilterNodes, CurrentViewNodes As XmlNodeList
Dim CurrentFilterNode, CurrentParentNode As XmlNode
sFilter = "urn:schemas:httpmail:subject LIKE '%Build Error%'"
CurrentExplorer = TryCast(ExplorerObj, Outlook.Explorer)
If (CurrentExplorer Is Not Nothing) Then
CurrentView = CurrentExplorer.CurrentView
If (CurrentView Is Not Nothing) Then
CurrentXML.LoadXML (CurrentView.xml)
CurrentFilterNodes = _
CurrentXML.getElementsByTagName("filter")
If CurrentFilterNodes.Count > 0 Then
For y = 0 To CurrentFilterNodes.Count - 1
CurrentFilterNode = CurrentFilterNodes(y)
If CurrentFilterNode.HasChildNodes Then
For i = CurrentFilterNode.ChildNodes.Count - 1 To 0 Step -1
CurrentFilterNode.RemoveChild (CurrentFilterNode.ChildNodes(i))
Next i
End If
Next y
CurrentFilterNode = CurrentFilterNodes(0)
CurrentFilterNode.appendChild ( _
CurrentXML.createTextNode(sFilter))
Else
CurrentViewNodes = CurrentXML.getElementsByTagName("view")
If CurrentViewNodes Is Not Nothing Then
CurrentParentNode = CurrentViewNodes(0)
CurrentFilterNode = CurrentXML.createElement("filter")
CurrentParentNode.appendChild (CurrentFilterNode)
CurrentFilterNode.appendChild (CurrentXML.createTextNode(sFilter))
End If
End If
CurrentView.xml = CurrentXML.InnerXml
CurrentView.Apply
Marshal.ReleaseComObject (CurrentView)
End If
End Sub

Answer 1

The VBA code for Outlook should look like as follows
Option Explicit
Sub Search2()
' https://stackoverflow.com/a/50145011/18573
' Add reference Microsoft XML, v6.0
Dim sFilter As String
Dim oExplorer As Explorer
Dim oView As View
Dim oXML As DOMDocument60
Dim cFilterNodes As IXMLDOMNodeList
Dim cViewNodes As IXMLDOMNodeList
Dim oFilterNode As IXMLDOMNode
Dim oParentNode As IXMLDOMNode
Dim y As Long
Dim i As Long
sFilter = "urn:schemas:httpmail:subject LIKE '%Build Error%'"
Set oXML = New DOMDocument60
Set oExplorer = ActiveExplorer
If Not oExplorer Is Nothing Then
Set oView = oExplorer.CurrentView
If Not oView Is Nothing Then
oXML.LoadXML oView.XML
Set cFilterNodes = oXML.getElementsByTagName("filter")
If cFilterNodes.Length > 0 Then
For y = 0 To cFilterNodes.Length - 1
Set oFilterNode = cFilterNodes(y)
If oFilterNode.HasChildNodes Then
For i = oFilterNode.ChildNodes.Length - 1 To 0 Step -1
oFilterNode.RemoveChild oFilterNode.ChildNodes(i)
Next
End If
Next
Set oFilterNode = cFilterNodes(0)
oFilterNode.appendChild oXML.createTextNode(sFilter)
Else
Set cViewNodes = oXML.getElementsByTagName("view")
If cViewNodes.Length > 0 Then
Set oParentNode = cViewNodes(0)
Set oFilterNode = oXML.createElement("filter")
oParentNode.appendChild oFilterNode
oFilterNode.appendChild oXML.createTextNode(sFilter)
End If
End If
Else
Set cViewNodes = oXML.getElementsByTagName("view")
If cViewNodes.Length > 0 Then
Set oParentNode = cViewNodes(0)
Set oFilterNode = oXML.createElement("filter")
oParentNode.appendChild oFilterNode
oFilterNode.appendChild oXML.createTextNode(sFilter)
End If
End If
oView.XML = oXML.XML
oView.Apply
End If
End Sub