在很多.net开发的项目中，我们几乎都会使用到一些自定义的参数，比如说第三方的配置参数之类的.
他们的特点是:1.系统全局 2,可以做成键值对(Dictionary).
我们可以将这些参数放到Web.config,xml或者数据库表中,当然部分不常变的可以直接写在程序中.
为了方便我通常喜欢将他们统放在一个配置管理器中,然后希望别人使用时, 可以像使用AppSetings中的参数一样
初看起来还是比较容易实现，在ConfiguratonManager中定义一个公开属性AppSettings就好了.
实现如下:
using System; using System.Collections.Generic; using System.Collections.ObjectModel; using System.Linq; using System.Text; using System.Threading.Tasks; namespace ConfigManager { public class ConfigurationContainer { private static ConfigurationContainer m_Instance = null; public static ConfigurationContainer Instance { get { if (m_Instance == null) m_Instance = new ConfigurationContainer(); return m_Instance; } } private ConfigurationContainer() { } private ReadOnlyDictionary<string, string> _configuration; private Dictionary<string, string> _mutableConfiguration; public ReadOnlyDictionary<string, string> Configuration { get { //TODO:check is newest or not in database?? if (_mutableConfiguration == null) Init(); _configuration = new ReadOnlyDictionary<string, string>(_mutableConfiguration); return _configuration; } } public bool Add(string key, string value) { bool bRet = false; if (!_mutableConfiguration.ContainsKey(key)) { _mutableConfiguration.Add(key, value); bRet = true; } return bRet; } public bool Update(string key, string value) { bool bRet = false; if (_mutableConfiguration.ContainsKey(key)) { _mutableConfiguration[key] = value; bRet = true; } return bRet; } public bool Remove(string key) { bool bRet = false; if (_mutableConfiguration.ContainsKey(key)) { _mutableConfiguration.Remove(key); bRet = true; } return bRet; } //private bool ConfigurationAllowed(string key, string value) //{ // // Put in your checks and balances // // here and return the appropriate result // return true; //} private void Init() { _mutableConfiguration = new Dictionary<string, string>(); _mutableConfiguration.Add("key", "value"); _mutableConfiguration.Add("key1", "value1"); _mutableConfiguration["key2"] = "value2"; } } } ConfigurationContainer: using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; namespace ConfigManager { public class ConfigManager { private static IReadOnlyDictionary<string, string> _AppSettings = null; public static IReadOnlyDictionary<string, string> Appettings { get { //initial ensurer the newest _AppSettings = ConfigurationContainer.Instance.Configuration; return _AppSettings; } } //Exception:Violence to Add public static void BeNaughtyWithConfiguration() { IDictionary<string, string> convertToReadWrite = (IDictionary<string, string>)_AppSettings; //ConfigElement element = convertToReadWrite["key"]; //element.Value = "Haa Haa"; //Console.WriteLine(element.Value); //Console.WriteLine(convertToReadWrite["key"]); //Console.ReadLine(); convertToReadWrite.Add("Key12345", "xsds"); } public static bool Add(string key, string value) { return ConfigurationContainer.Instance.Add(key, value); } public static bool Update(string key, string value) { return ConfigurationContainer.Instance.Update(key, value); } public static bool Remove(string key) { return ConfigurationContainer.Instance.Remove(key); } } } |
