listview绑定数据并显示ImageList图片

this.listView1.Columns.Add("房间ID");
this.listView1.Columns.Add("房间类型");
this.listView1.Columns.Add("房价");
this.listView1.Columns.Add("房间状态");

this.listView1.FullRowSelect = true;
this.listView1.View = View.LargeIcon;

string sql = "select a.ids,a.roomid as 房间ID,a.typeids as 房间类型,a.price as 房价,b.name as 房间状态 from room a,roomtype b where a.typeids = b.ids";
DataTable dt = DBUtil.dbutil.huoqu(sql);

this.listView1.Groups.Add("putongdanjian", "普通单间");
this.listView1.Groups.Add("putongbiaojian", "普通标间");
this.listView1.Groups.Add("haohuabiaojian", "豪华标间");

foreach (DataRow dr in dt.Rows)
{
ListViewItem viewitem = new ListViewItem();
viewitem.ImageIndex = 0;

viewitem.Text = dr["房间ID"].ToString();

viewitem.SubItems.Add(dr["房间类型"].ToString());
viewitem.SubItems.Add(dr["房价"].ToString());
viewitem.SubItems.Add(dr["房间状态"].ToString());

if (dr["房间类型"].ToString() == "1")
{
this.listView1.Groups["putongdanjian"].Items.Add(viewitem);
}

if (dr["房间类型"].ToString() == "2")
{
this.listView1.Groups["putongbiaojian"].Items.Add(viewitem);
}

if (dr["房间类型"].ToString() == "3")
{
this.listView1.Groups["haohuabiaojian"].Items.Add(viewitem);
}

this.listView1.Items.Add(viewitem);

}

<pre name="code" class="csharp"><img src="https://img-blog.csdn.net/20151008210840562?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQv/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/SouthEast" alt="" />