public void DelMember(string group_id, string member)
        {
            try
            {
                if (!Cache.TryGetValue(group_id, out KXTGroupInfoFile file))
                {
                    file = new KXTGroupInfoFile
                           (
                        RootPath + "\\" + group_id + ".json"
                           );
                    Cache.TryAdd(group_id, file);
                }

                file.DelMember(member);
            }
            catch
            {
                Notify(LogLevel.Warning, "群组信息数据操作异常:文件异常");
            }
        }
        public string[] ReadMembers(string group_id)
        {
            try
            {
                if (!Cache.TryGetValue(group_id, out KXTGroupInfoFile file))
                {
                    file = new KXTGroupInfoFile
                           (
                        RootPath + "\\" + group_id + ".json"
                           );
                    Cache.TryAdd(group_id, file);
                }

                file.ReadMembers(out string[] friends);

                return(friends);
            }
            catch
            {
                Notify(LogLevel.Warning, "群组信息数据操作异常:文件异常");
                return(new string[0]);
            }
        }