Moving the group of a checked item in a listview C#

Question

I have a list view with two groups. I want it so that when I check an item it moves to the second group and when I uncheck it, it moves back to the first.

Here is the code I have tried so far:

private void lstServices_ItemChecked(Object sender, ItemCheckedEventArgs e)
{
  foreach (ListViewItem item in lstServices.Items)
   {
     if (item.Checked)
     {
       item.Group = lstServices.Groups[1];
     }
     else
     {
       item.Group = lstServices.Groups[0];
     }
   }
}

Firstly I find it buggy. When I tick something it does tend to move to the second group, but when I untick it sometimes it goes back to the first group, sometimes they just wont untick at all and I can't work out why.

Secondly I think this is a messy way to do it, each time something is checked I'm checking the whole list and then moving accordingly. I'm assuming there is a way to address just the item I have just checked but I can't work out how!

Answer 1

To get rid of the loop, you must do something like this:

private void lstServices_ItemChecked(Object sender, ItemCheckedEventArgs e)
{
     ListViewItem item=e.Item;
     if (item.Checked)
     {
         item.Group = lstServices.Groups[1];
     }
     else
     {
         item.Group = lstServices.Groups[0];
     }
}

The ItemCheckedEventArgs variable e has one property, returning the ListViewItem that fired the event.