Question

I have a ListView in Virtual Mode. I wanna to access SelectedItems property.
But when I use ListView1.SelectedItems , I receive the following Exception :

Cannot access the selected items collection when the ListView is in virtual mode

How can I access to ListView1.SelectedItems in VirtualMode.

Answer 1

I’ve done it by the following code, but it has an exception when more than one item are selected:

Index was out of range. Must be non-negative and less than the size of the collection.
Parameter name: index

List<ListViewItem> ListViewItems = new List<ListViewItem>();

foreach (int index in listView1.SelectedIndices)
{
    ListViewItem SelectedListViewItem = listView1.Items[index];  // exception
    ListViewItems.RemoveAt(index);
}
…

void listView1_RetrieveVirtualItem(object sender, RetrieveVirtualItemEventArgs e)
{
    e.Item = ListViewItems[e.ItemIndex];
}

Whenever you remove item(s) from a collection, always iterate from the largest index to the smallest index, like this:

for (int index = listView1.SelectedIndices.Count - 1; i >= 0; i--)
{
    …
}

This is because every time you remove an item in a collection, the index will change if you do not iterate from the largest to the smallest index.