1. The ListView control does not support DataBinding, so you will have
to add data row after row only.

2.

foreach(DataRow row in ds.Rows)
{
    ListViewItem item = new ListViewItem();
    item.Text = row[0];
    item.SubItems.Add(row[1]);
    .
    .
    .
    item.SubItems.Add(row[n]);

    listView.Items.Add(item);
}

3. A datareader does not buffer data, the rows are read from a TDS that
is returned by SQL server.

Sijin Joseph
http://www.indiangeek.net
http://weblogs.asp.net/sjoseph