■ 언패키지드(Unpackaged) 모드에서 로컬 설정 값을 저장하거나 구하는 방법을 보여준다.
※ 언패키지드(UnPackaged) 모드에서는 ApplicationData 클래스의 Current 정적 속성을 사용해 로컬 설정을 처리할 수 없기 때문에 별도로 구현한 것이다.
▶ 예제 코드 (C#)
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LocalSettingHelper localSettingHelper = new LocalSettingHelper(); if(localSettingHelper.Exists()) { await localSettingHelper.LoadAsync(); } else { localSettingHelper.AddItem("exampleSetting", "Hello, World!"); await localSettingHelper.SaveAsync(); } string value = localSettingHelper["exampleSetting"]; |
▶ LocalSettingHelper.cs
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using System; using System.Collections.Generic; using System.IO; using System.Text.Json; using System.Threading.Tasks; /// <summary> /// 로컬 설정 헬퍼 /// </summary> public class LocalSettingHelper { //////////////////////////////////////////////////////////////////////////////////////////////////// Field ////////////////////////////////////////////////////////////////////////////////////////// Private #region Field /// <summary> /// 디렉토리 경로 /// </summary> private readonly string directoryPath; /// <summary> /// 파일명 /// </summary> private const string FILE_NAME = "settings.dat"; /// <summary> /// 파일 경로 /// </summary> private readonly string filePath; /// <summary> /// 딕셔너리 /// </summary> private Dictionary<string, string> dictionary = new Dictionary<string, string>(); #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Property ////////////////////////////////////////////////////////////////////////////////////////// Public #region 인덱서 - this[key] /// <summary> /// 인덱서 /// </summary> /// <param name="key"></param> /// <returns></returns> public string this[string key] { get { if(this.dictionary.ContainsKey(key)) { return this.dictionary[key]; } else { throw new KeyNotFoundException(key); } } set { if(this.dictionary.ContainsKey(key)) { this.dictionary[key] = value; } else { AddItem(key, value); } } } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor ////////////////////////////////////////////////////////////////////////////////////////// Public #region 생성자 - LocalSettingHelper() /// <summary> /// 생성자 /// </summary> public LocalSettingHelper() { this.directoryPath = Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData); this.filePath = Path.Combine(this.directoryPath, FILE_NAME); } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Public #region 항목 추가하기 - AddItem(key, value) /// <summary> /// 항목 추가하기 /// </summary> /// <param name="key">이벤트 발생자</param> /// <param name="value">이벤트 인자</param> /// <returns>처리 결과</returns> public bool AddItem(string key, string value) { try { if(this.dictionary.ContainsKey(key)) { this.dictionary[key] = value; } else { this.dictionary.Add(key, value); } return true; } catch(Exception) { return false; } } #endregion #region 키 존재 여부 구하기 - ContainsKey(key) /// <summary> /// 키 존재 여부 구하기 /// </summary> /// <param name="key">키</param> /// <returns>키 존재 여부</returns> public bool ContainsKey(string key) { return this.dictionary.ContainsKey(key); } #endregion #region 항목 제거하기 - RemoveItem(key) /// <summary> /// 항목 제거하기 /// </summary> /// <param name="key">키</param> /// <returns>처리 결과</returns> public bool RemoveItem(string key) { try { if(this.dictionary.ContainsKey(key)) { return this.dictionary.Remove(key); } else { return false; } } catch(Exception) { return false; } } #endregion #region 존재 여부 구하기 - Exists() /// <summary> /// 존재 여부 구하기 /// </summary> /// <returns>존재 여부</returns> public bool Exists() { return File.Exists(this.filePath); } #endregion #region 저장하기 - SaveAsync() /// <summary> /// 저장하기 /// </summary> /// <returns>태스크</returns> public async Task SaveAsync() { string json = JsonSerializer.Serialize(this.dictionary); await File.WriteAllTextAsync(filePath, json); } #endregion #region 로드하기 (비동기) - LoadAsync() /// <summary> /// 로드하기 (비동기) /// </summary> /// <returns>태스크</returns> public async Task LoadAsync() { if(File.Exists(this.filePath)) { string json = await File.ReadAllTextAsync(this.filePath); Dictionary<string, string> dictionary = JsonSerializer.Deserialize<Dictionary<string, string>>(json); if(this.dictionary != null) { this.dictionary.Clear(); this.dictionary = null; } this.dictionary = dictionary; } else { throw new FileNotFoundException(this.filePath); } } #endregion } |