RepeaterItems Problem

[Muc_]

What i try is to get 2 RepeaterItems in one Item... I guess its possible or not? Here is my Code but my page still always empty

Repeater getGroupRepeater = (Repeater)sender;

        for (int i = 0; i < getGroupRepeater.Items.Count; i += 2)
        {
            RepeaterItem item = new RepeaterItem(i, ListItemType.Item);

            if (i != getGroupRepeater.Items.Count - 1)
            {
                item.Controls.Add(getGroupRepeater.Items\[i\]);
                item.Controls.Add(getGroupRepeater.Items\[i + 1\]);

            }
            else if (i == getGroupRepeater.Items.Count - 1)
            {
                item.Controls.Add(getGroupRepeater.Items\[i\]);
            }

            getGroupRepeater.ItemTemplate.InstantiateIn(item);
        }