//好友在不在分组中，在，返回该好友，不在，添加新的好友，返回该好友
public static FriendEntity InGroupAdd(ref FriendGroup friendGroup, String name)
{
foreach (var entity in friendGroup.Friends)
{
if (entity.Name == name)
{
return(entity);
}
}
FriendEntity friendentity = new FriendEntity();
friendGroup.FriendGroupAdd(ref friendentity);
return(friendentity);
}
//检查指定名字的分组是否在分组列表中,如果在分组List中，返回该分组，如果不在，添加一个分组并返回该分组
public static FriendGroup InGroupListAdd(ref ObservableCollection <FriendGroup> grouplist, String name)
{
foreach (var group in grouplist)
{
if (group.Name == name)
{
return(group);
}
}
FriendGroup friendGroup = new FriendGroup()
{
Name = name
};
grouplist.Add(friendGroup);
return(friendGroup);
}
//从整个好友列表中删除对应的对象
public static void InGroupListDelete(ObservableCollection <FriendGroup> friendGroups, String id)
{
FriendGroup friendGroup = null;
FriendEntity friendEntity = null;
foreach (var group in friendGroups)
{
foreach (var entity in group.Friends)
{
if (entity.Id == id)
{
friendGroup = group;
friendEntity = entity;
break;
}
}
}
//删除对应的对象
friendGroup.Friends.Remove(friendEntity);
if (friendGroup.Friends.Count == 0)
{
friendGroups.Remove(friendGroup);
}
}