if (this.itemsArray != null)
    {
        this.itemsArray.Clear();
    }
    else
    {
        this.itemsArray = new ArrayList();
    }
    if (!useDataSource)
    {
        dataItemCount = (int) this.ViewState["_!ItemCount"];
        if (dataItemCount != -1)
        {
            data = new DummyDataSource(dataItemCount);
            this.itemsArray.Capacity = dataItemCount;
        }
    }
    else
    {
        data = this.GetData();
        ICollection is2 = data as ICollection;
        if (is2 != null)
        {
            this.itemsArray.Capacity = is2.Count;
        }
    }
    if (data != null)
    {
        int itemIndex = 0;
        bool flag = this.separatorTemplate != null;
        dataItemCount = 0;
        if (this.headerTemplate != null)
        {
            this.CreateItem(-1, ListItemType.Header, useDataSource, null);
        }
        foreach (object obj2 in data)
        {
            if (flag && (dataItemCount > 0))
            {
                this.CreateItem(itemIndex - 1, ListItemType.Separator, useDataSource, null);
            }
            ListItemType itemType = ((itemIndex % 2) == 0) ? ListItemType.Item : ListItemType.AlternatingItem;
            RepeaterItem item = this.CreateItem(itemIndex, itemType, useDataSource, obj2);
            this.itemsArray.Add(item);
            dataItemCount++;
            itemIndex++;
        }
        if (this.footerTemplate != null)
        {
            this.CreateItem(-1, ListItemType.Footer, useDataSource, null);
        }
    }