C# List.Select方法代码示例

 public MonsterEngine(List<Monster> monsters, List<BaseEntity> surroundings)
 {
     List<MonsterAI> monsterAIs = monsters.Select(x => new MonsterAI(x, surroundings)).ToList();
     this.ActiveMonsters = monsterAIs;
     RegisterAIEvents();
     activeThread = new Thread(AIOperation);
     activeThread.IsBackground = true;
 }

        public IEnumerable<string> GetAllById(Guid id)
        {
            IEnumerable<GoalLog> goalLogs = database.GetTheDatabase().GoalLog.FindAllByGoalId(id).ToList<GoalLog>();
            var accountIds = new HashSet<Guid>();
            var domainEvents = new List<GoalDomainEvent>();
            var accounts = new Dictionary<Guid, Account>();

            foreach (var goalLog in goalLogs) {
                var type = Type.GetType(goalLog.Event);
                var goalDomainEvent = (GoalDomainEvent)JsonConvert.DeserializeObject(goalLog.Data, type);
                accountIds.Add(goalDomainEvent.AccountId);
                domainEvents.Add(goalDomainEvent);
            }

            foreach (var accountId in accountIds) {
                accounts[accountId] = accountRepository.FindById(accountId);
            }

            return domainEvents.Select(domainEvent => domainEvent.GetMessage(accounts[domainEvent.AccountId])).ToList();
        }

 public List<TaskModel> GetModelList(List<Task> tasks)
 {
     return tasks.Select(GetModel).ToList();
 }

        public IEnumerable<KeyValuePair<int, string>> Search(string customerName)
        {
            if (string.IsNullOrEmpty(customerName) || string.IsNullOrWhiteSpace(customerName))
            {
                yield return new KeyValuePair<int, string>();
            }

            var search = new CustomerSearch(new LevenshteinDistance());

            IEnumerable<KeyValuePair<int, string>> values = new List<KeyValuePair<int, string>>();
            if (_customerRespository.Persistence == Persistence.SQL)
            {
                values = _customerRespository.All.Select(i => new KeyValuePair<int, string>(i.Id, i.Name)).ToList();
            }
            else if (_customerRespository.Persistence == Persistence.Graph)
            {
                var graph = _customerRespository.GraphClient;

                values = graph.Cypher.Match("(p:Customer)").Return(p => p.As<CustomerGraph.Node>()).Results
                                     .Select(p => new KeyValuePair<int, string>((int)p.Id, p.Name));
            }

            foreach (var match in search.FindClosestMatches(customerName, values.Select(i => i.Value), 5))
            {
                yield return (new KeyValuePair<int, string>(values.First(c => c.Value == match).Key, match));
            }
        }

 public List<TagsModel> GetModelList(List<Tag> tags)
 {
     return tags.Select(GetModel).ToList();
 }

 public List<UserModel> GetModelList(List<User> users)
 {
     return users.Select(GetModel).ToList();
 }

		/// <summary>
		/// 登录。如果返回异常则说明登录失败
		/// </summary>
		/// <param name="verifyPoints"></param>
		/// <returns></returns>
		public async Task<Exception> LoginAsync(string username, string password, List<Point> verifyPoints)
		{
			IsLogined = false;
			LoginInfo = new LoginInfo()
			{
				UserName = username,
				Password = password
			};
			var loginData = new Dictionary<string, string>()
			{
				["loginUserDTO.user_name"] = LoginInfo.UserName,
				["userDTO.password"] = LoginInfo.Password,
				["randCode"] = verifyPoints.Select(s => s.X + "," + s.Y).JoinAsString(",")
			};
			var loginCheck = NetClient.Create<WebResponseResult<LoginAsyncResult>>(
											 HttpMethod.Post,
											"https://kyfw.12306.cn/otn/login/loginAysnSuggest",
											"https://kyfw.12306.cn/otn/login/init",
											loginData
				);
			await loginCheck.SendTask();
			if (!loginCheck.IsValid())
			{
				return loginCheck.Exception ?? new Exception("未能提交请求");
			}

			if (!loginCheck.Result.Data.IsSuceess)
			{
				return new Exception(loginCheck.Result.GetErrorMessage());
			}

			//登录成功
			var postLogin = NetClient.Create<string>(
													 HttpMethod.Post,
													"https://kyfw.12306.cn/otn/login/userLogin",
													"https://kyfw.12306.cn/otn/login/init"
				);
			await postLogin.SendTask(); //这里的返回值我们不care ....

			//登录好了。等等。。我们好像想拿到显示的中文名？
			//所以多加一个请求吧。
			var realNameCtx = NetClient.Create<string>(
													 HttpMethod.Get,
													"https://kyfw.12306.cn/otn/index/initMy12306",
													"https://kyfw.12306.cn/otn/login/init"
				);
			await realNameCtx.SendTask();

			if (realNameCtx.IsValid())
			{
				//匹配出名字信息
				var realMatch = Regex.Match(realNameCtx.Result, @"user_name\s*=\s*['""]([^'""]+)['""]", RegexOptions.Singleline);
				if (realMatch.Success)
				{
					LoginInfo.DisplayName = realMatch.GetGroupValue(1).DecodeFromJsExpression();
				}
			}
			//这里失败了我们就随便起个名字，嗯。
			if (LoginInfo.DisplayName.IsNullOrEmpty())
				LoginInfo.DisplayName = "路人甲";



			IsLogined = true;

			return null;
		}

 public List<CompanyVM> GetAllCompanyVMByUser(int customerType, int userId)
 {
     User user = UserDAL.GetById(userId, new List<string> { "RelUserCompanies.Company" });
     var companyList = new List<Company>();
     foreach (var relCompany in user.RelUserCompanies)
     {
         if (!relCompany.IsDeleted && relCompany.Company.Type == customerType)
         {
             companyList.Add(relCompany.Company);
         }
     }
     return companyList.Select(o => new CompanyVM
     {
         Id = o.Id,
         Name = o.Name
     }).ToList();
 }