C#實作Array,List,Dictionary的互相轉換

C#實作Array,List,Dictionary的互相轉換

一、代碼執行個體實作功能

• 将Array轉換為List
• 将List轉換為Array
• 将Array轉換為Dictionary
• 将Dictionary轉換為Array
• 将List轉換為Dictionary
• 将Dictionary轉換為List

二、代碼實作

class Student
    {
        public int Id { get; set; }
        public string Name { get; set; }
        public string Gender { get; set; }
    }      

學生類

static void Main(string[] args)
        {
            #region 建立學生數組
            //建立數組
            Student[] StudentArray = new Student[3];
            //建立建立3個student對象，并指派給數組的每一個元素
            StudentArray[0] = new Student()
            {
                Id = 0001,
                Name = "Tony",
                Gender = "M"
            };
            StudentArray[1] = new Student()
            {
                Id = 0002,
                Name = "Hulk",
                Gender = "M"
            };
            StudentArray[2] = new Student()
            {
                Id = 0003,
                Name = "Black",
                Gender = "F"
            };

            #endregion
            Console.WriteLine("=================測試列印資訊=================");

            //列印Array中學生資訊
            Console.WriteLine("列印Array中學生資訊:");
            foreach (Student student in StudentArray)
            {
                Console.WriteLine("Id = " + student.Id + " " + " Name = " + student.Name + "  " + " Gender = " + student.Gender);
            }

            //Array轉為LIST
            List<Student> StudentList = StudentArray.ToList<Student>();
            //列印List中的學生資訊
            Console.WriteLine("列印List中學生資訊:");
            foreach (Student student in StudentList)
            {
                Console.WriteLine("Id = " + student.Id + " " + " Name = " + student.Name + " " + " Gender = " + student.Gender);
            }

            //LIST轉為Array
            Student[] ListToArray = StudentList.ToArray<Student>();
            Console.WriteLine("列印ListToArray中的學生資訊:");
            //列印ListToArray中的學生資訊
            foreach (Student student in ListToArray)
            {
                Console.WriteLine("Id = " + student.Id + " " + " Name = " + student.Name + " " + " Gender = " + student.Gender);
            }

            //Array轉換為Dictionary
            Dictionary<int, Student> StudentDictionary = StudentArray.ToDictionary(key => key.Id, Studentobj => Studentobj);
            //列印ArrayToDictionary中的學生資訊
            Console.WriteLine("列印ArrayToDictionary中的學生資訊:");
            foreach (KeyValuePair<int, Student> student in StudentDictionary)
            {
                Console.WriteLine("Id = " + student.Key + " " + " Name = " + student.Value.Name + " " + " Gender = " + student.Value.Gender);
            }

            //Dictionary轉換為Array
            Student[] DictionaryToArray = StudentDictionary.Values.ToArray();
            //列印Dictionary轉Array中的學生資訊
            Console.WriteLine("列印DictionaryToArray中的學生資訊:");
            foreach (Student student in DictionaryToArray)
            {
                Console.WriteLine("Id = " + student.Id + " " + " Name = " + student.Name + " " + " Gender = " + student.Gender);
            }

            //List轉換為Dictionary
            Dictionary<int, Student> ListToDictionary = StudentList.ToDictionary(key => key.Id, value => value);
            //列印ListToDictionary中的學生資訊
            Console.WriteLine("列印ListToDictionary中的學生資訊:");
            foreach (KeyValuePair<int, Student> student in ListToDictionary)
            {
                Console.WriteLine("Id = " + student.Key + " " + " Name = " + student.Value.Name + " " + " Gender = " + student.Value.Gender);
            }

            //Dictionary轉換為List
            List<Student> DictionaryToList = StudentDictionary.Values.ToList();
            //列印DictionaryToList中的學生資訊
            Console.WriteLine("列印DictionaryToList中的學生資訊:");
            foreach (Student student in DictionaryToList)
            {
                Console.WriteLine("Id = " + student.Id + " " + " Name = " + student.Name + " " + " Gender = " + student.Gender);
            }
            Console.WriteLine("===============END===================");
            Console.ReadLine();
        }      

轉換實作代碼

三、結果輸出

本文來自部落格園，作者：農碼一生，轉載請注明原文連結：https://www.cnblogs.com/wml-it/p/15514456.html

技術的發展日新月異，随着時間推移，無法保證本部落格所有内容的正确性。如有誤導，請大家見諒，歡迎評論區指正！ 個人開源代碼連結: GitHub:

https://github.com/ITMingliang

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https://gitee.com/mingliang_it

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https://gitlab.com/ITMingliang

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