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Using groups in the listview control

Hi Experts,

I'm writing a VB.Net 2005 application. I have a tree-view control on my form and a listview control on its right. The listview control has to show all the child nodes of the selected treeview node. That's easy enough, however I'm having some problems formatting the listview control the way I want it.

I'd like to use that lovely group heading (the one with the fading blue line, looks very cool). In order to use groups, I think the listview's view must be set to details which I've done. The heading is displayed.

I've got two problems remaining:

1. The group heading reads "Default". How do I change it? I've tried this without luck:
me.lvwNodeContent.Groups(0).Name = ParentNode.Text

2. I don;t want the listview's column header displayed. It looks ugly!! Any way of hiding it?

Thanks

SteveH_UK

You need to use the Groups and ShowGroups properties. I don't think you need to use the Details view.

Your items should be added to the groups, rather than directly to the ListView.

SteveH_UK

See:

http://msdn2.microsoft.com/en-us/library/system.windows.forms.listviewgroup.aspx (ListViewGroup)
http://msdn2.microsoft.com/en-us/library/system.windows.forms.listview.aspx (ListView)

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SteveH_UK

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SteveH_UK

Add, I was wrong. You do add the items to the ListView directly, but you also set the item's Group property. Mentioned in the how-to. Don't forget the Application.EnableVisualStyles method call, either.

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Wayne Taylor (webtubbs)

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Jaime Olivares

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Jaime Olivares

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PantoffelSlippers

ASKER

Thanks Experts!

Let me have a look!

PantoffelSlippers

ASKER

Thank you experts!
A perfect solution in no time.
Thanks for effort - everyone joined in.
Thanks again!

PantoffelSlippers

ASKER

My final code looks like this:

Private Sub UpdateContent(ByRef ParentNode As TreeNode)
Dim XNode As TreeNode
Dim XItem As ListViewItem

'Prepare the listview
With Me.lvwNodeContent
.Items.Clear()
.Groups.Clear()
.Columns.Clear()

.Columns.Add("", CInt(lvwNodeContent.Width * 0.98), HorizontalAlignment.Left)
.Groups.Add(ParentNode.Text, ParentNode.Text)
End With

'Add the nodes
For Each XNode In ParentNode.Nodes
XItem = lvwNodeContent.Items.Add(XNode.Text)
XItem.Tag = XNode.Index
XItem.ImageIndex = XNode.ImageIndex
XItem.Group = lvwNodeContent.Groups(ParentNode.Text) 'Key
Next

End Sub

PantoffelSlippers

ASKER

Thank you experts

SteveH_UK

You're welcome :)