//方法一：
DataTable dt = SqlHelper.GetDataTable("select id,Title from Content");
listView1.BeginUpdate();
foreach (DataRow row in dt.Rows)
{
    listView1.Items.Add(row[1].ToString());
}
listView1.EndUpdate();
 
//方法二：
//List<ListViewItem> list = new List<ListViewItem>();
//DataTable dt = SqlHelper.GetDataTable("select id,Title from Content");
//foreach (DataRow row in dt.Rows)
//{
//    ListViewItem lvi = new ListViewItem();
//    lvi.Text = row[1].ToString();
//    list.Add(lvi);
//}
//listView1.Items.Clear();
//listView1.Items.AddRange(list.ToArray());
 
//方法三
//DataTable dt = SqlHelper.GetDataTable("select id,Title from Content");
//ListViewItem[] lvis = new ListViewItem[dt.Rows.Count];
//int i = 0;
//foreach (DataRow row in dt.Rows)
//{
//    lvis[i] = new ListViewItem(row[1].ToString());
//    i++;
//}
//listView1.Items.Clear();
//listView1.Items.AddRange(lvis);