json파일 예제. With File 3가지 출력.

using System; 
using System.Collections.Generic; 
using System.IO; 
using System.Linq; 
using System.Text; 
using System.Threading.Tasks; 
using Newtonsoft.Json; 
 
namespace Study_013_1 
{ 
    public class App 
    { 
        public Dictionary<int, ItemData> itemDataDict; 
        public App() 
        { 
            /* 
            //Dictionary 예제. 
            var dict = new Dictionary<int, string>(); 
            dict.Add(100, "장검"); 
            dict.Add(200, "단검"); 
            dict.Add(300, "활"); 
 
            Console.WriteLine("{0} : {1}", 100, dict[100]); 
            Console.WriteLine("{0} : {1}", 200, dict[200]); 
 
            foreach (var kvp in dict) 
                Console.WriteLine("키 : {0}, 값 : {1}", kvp.Key, kvp.Value); 
 
            dict.Remove(200); 
            foreach (var kvp in dict) 
                Console.WriteLine("키 : {0}, 값 : {1}", kvp.Key, kvp.Value); 
 
            foreach(string value in dict.Values) 
            { 
                Console.WriteLine(value); 
            } 
            */ 
 
 
 
 
 
 
            /* 
            //Dict예제2 
            var bookDict = new Dictionary<string, string>(); 
            bookDict["0001"] = "어린 왕자"; 
            bookDict["0002"] = "보물섬"; 
            bookDict["0003"] = "동물농장"; 
 
            //key로 값 출력. 
            Console.WriteLine(bookDict["0002"]); 
 
            //foreach문으로 사전요소 출력. 
            foreach (var kvp in bookDict) 
                Console.WriteLine("{0}, {1}", kvp.Key, kvp.Value); 
 
            //remove 
            bookDict.Remove("0003"); 
            //contains 
            bookDict.ContainsKey("0002"); 
            bookDict.ContainsValue("동물농장"); 
            //count 
            Console.WriteLine(bookDict.Count); 
            */ 
 
 
 
 
 
 
 
            string path = "./item_data1.json"; 
            string json = File.ReadAllText(path); 
 
            //문자열 json을 배열객체 (ItemData객체 들어있는) 
            ItemData[] itemDataArr = JsonConvert.DeserializeObject<ItemData[]>(json); 
 
            //사전에 옮겨담음. 
            itemDataDict = new Dictionary<int, ItemData>(); 
            foreach (ItemData data in itemDataArr) 
                itemDataDict.Add(data.id, data); 
 
            //해당 ID를 가지고 아이템을 생성한다. 
            Item item1 = this.CreateItemById(102); 
            item1.PrintItemInfo(); 
        } 
 
        public Item CreateItemById(int id) 
        { 
            if (this.itemDataDict.ContainsKey(id)) 
                return new Item(itemDataDict[id]); 
 
            return null; 
        } 
    } 
} 

 

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.IO;
using Newtonsoft.Json;
 
namespace Study_013_3
{
    public class App
    {
        public Dictionary<int, ItemData> ItemDataDict;
 
        public App()
        {
            this.ItemDataDict = new Dictionary<int, ItemData>();
 
            string fileDir = "./cookie_data.json";
 
            //출력1
            string jsonData = File.ReadAllText(fileDir);
            //Console.WriteLine(jsonData);
 
            //출력2
            string[] jsonLines = File.ReadAllLines(fileDir);
            //foreach (string str in jsonLines)
            //    Console.WriteLine(str);
 
            //출력3
            IEnumerator<string> Enumerator = (IEnumerator<string>)File.ReadLines(fileDir);
            while (Enumerator.MoveNext())
                Console.WriteLine(Enumerator.Current);
 
 
            ItemData[] itemDataArr = JsonConvert.DeserializeObject<ItemData[]>(jsonData);
 
            foreach (ItemData data in itemDataArr)
                this.ItemDataDict.Add(data.id, data);
 
            Item createdItem = this.CreateItemById(102);
            //createdItem.PrintItemInfo();
        }
 
        public Item CreateItemById(int id)
        {
            if (this.ItemDataDict.ContainsKey(id))
                return new Item(ItemDataDict[id]);
 
            return null;
        }
    }
}