C# ListView Appears Blank with Groups

Question

In VS2005, using C#, I have a Forms application with a ListView. I can added items to the listview just fine. However, as soon as I try to sort those items into groups, they don't appear. I know that groups don't appear when they're empty, but I've confirmed these groups are not empty. Also, I am setting listView.ShowGroups = true. If I add items to one of the groups, but not the second, the "Default" group does show up...it's just the groups I've added that don't appear!

Here's the code I'm using:

this.listView.View = View.Details;
this.listView.Columns.Add("Column1");
this.listView.Columns[0].Width = this.listView.Width - 20;
this.listView.HeaderStyle = ColumnHeaderStyle.None;
this.listView.Groups.Add(new ListViewGroup("A"));
this.listView.Groups.Add(new ListViewGroup("D"));


foreach(item i in Class.Items)
{
    if (i.Type == Type.A)
        this.listView.Groups[0].Items.Add(i.Name);
    else
        this.listView.Groups[1].Items.Add(i.Name);
}
this.listView.ShowGroups = true;

Does anyone have any ideas as to why my groups don't show up? Here's a screen shot of what I'm seeing:

Answer 1

You should not add items to the group, but rather adding items to the list view, and for each item set its Group property to the desired group.

You can see an example in this MSDN link