1//选中所有项
 2            for (int i=0;i < CList.Items.Count; i++)
 3            {
 4                CList.SetItemChecked(i, ChkAll.Checked);
 5            }
 6
 7if (CList.GetItemChecked(i))
 8                {
 9                   //如果选中则判断ALClient中是否已存在，不存在则添加
10                    if (! ALClients.Contains(ClientInfo))
11                    {
12                        ALClients.Add(ClientInfo);
13                    }
14                }
15                else
16                {
17                    //如果未选中则判断ALClient中是否已存在，已存在则移除
18                    if (ALClients.Contains(ClientInfo))
19                    {
20                        ALClients.Remove(ClientInfo);
21                    }
22                }