How to compare 2 listviews and copy listview content to another listvi

[Edward07]

Hi all. I am filling a listview with xml data as shown in code beleow. I am calling this part using timer.What i want at the end of this code to compare listview1 with listview2. If they are diffrent or if listview2 is empty then i copy content of listview1 to listview 2.Otherwise do nothing. could any one show me how i can make such compare an copy?Thanks

Dim objDoc As MSXML2.DOMDocument
Dim objNodelist As IXMLDOMNodeList
Dim objNode As IXMLDOMNode
Dim lvwItem As ListItem


    'load the xml document
    Set objDoc = New MSXML2.DOMDocument
    objDoc.async = False
    objDoc.Load "[URL unfurl="true"]http://localhost/data.php"[/URL]
    
    'add all the song nodes into a  nodelist
    Set objNodelist = objDoc.selectNodes("//song")
    
    'Clear the listview
    ListView1.ListItems.Clear

    'Loop through each song node and add to the list view
    For Each objNode In objNodelist
        Set lvwItem = ListView1.ListItems.Add(, , objNode.selectSingleNode("artist").Text)
        lvwItem.SubItems(1) = objNode.selectSingleNode("name").Text
        lvwItem.SubItems(2) = objNode.selectSingleNode("image").Text
        lvwItem.SubItems(3) = objNode.selectSingleNode("rating").Text
        lvwItem.SubItems(4) = objNode.selectSingleNode("songid").Text
        lvwItem.SubItems(5) = objNode.selectSingleNode("totalvotes").Text

    Next objNode

''Here i want to compare listview1 with listview2. If it is empty or diffrent if fill it
otherwise i do nothing.
Set lvwItem = Nothing
    Set objNodelist = Nothing
    Set objDoc = Nothing

 

[BobRodes]

What you're describing is always having two identical copies of the same listview. Why can't you just always fill it whether it's identical or not?

Bob

 

[Edward07]

Thank you for your reply. I am trying to reduce the number of listview reloading. I want to reload listview ONLY when i see its data is diffrent then the data that has just arrived. Could you help me with this probelm?

 

[BobRodes]

Ok, as I said in your other post (by the way, are you beginning to see why creating multiple threads about the same thing is a problem?) it looks more like you're concerned about the appearance of your application than its behavior. So, if the user can't see you reloading listview, then it's fine to reload listview.