How To: Dynamically Resize Focused Item

Better ListView 2.4.0 now supports setting MaximumTextLines property on every item and sub-item, so you can have multi-line items each with different number text lines:

Dynamic resizing of the focused item

We also introduced FocusedItemChanged event, so that you can detect when focus has moved from one element (item / sub-item / group) to another.

These features can be combined to display only the focused item with more details to save space code of the FocusedItemChanged event handler may look like this:

C#

void ListViewFocusedItemChanged(object sender, BetterListViewFocusedItemChangedEventArgs eventArgs)
{
    BetterListView listView = (BetterListView)sender;

    listView.BeginUpdate();

    if (eventArgs.FocusedItemOld != null)
    {
        // set single line of text for currenly unfocused item
        eventArgs.FocusedItemOld.MaximumTextLines = 1;
    }

    if (eventArgs.FocusedItemNew != null)
    {
        // set three lines of text for currenly focused item
        eventArgs.FocusedItemNew.MaximumTextLines = 3;
    }

    listView.EndUpdate();
}

Visual Basic

Sub ListViewFocusedItemChanged(sender As Object, eventArgs As BetterListViewFocusedItemChangedEventArgs)
	Dim ListView As BetterListView = DirectCast(sender, BetterListView)

	ListView.BeginUpdate()

	If eventArgs.FocusedItemOld IsNot Nothing Then
		' set single line of text for currenly unfocused item
		eventArgs.FocusedItemOld.MaximumTextLines = 1
	End If

	If eventArgs.FocusedItemNew IsNot Nothing Then
		' set three lines of text for currenly focused item
		eventArgs.FocusedItemNew.MaximumTextLines = 3
	End If

	ListView.EndUpdate()
End Sub