/// <summary>
/// 移除用户
/// </summary>
/// <param name="user">指定要移除的用户</param>
public void RemoveUser(User user)
{
if (yongHuTuiChuEvent != null)
yongHuTuiChuEvent(user);
userList.Remove(user.guid);
user.Close();
//AddItemToListBox(string.Format("当前连接用户数：{0}", userList.Count));
}