主要是根据FileSystemWatcher类来监听配置文件
目标是每次修改了web.config配置文件不用回收应用程序或者重启网站
贴出实现核心代码
1 /// <summary> 2 /// 配置文件监听器 3 /// </summary> 4 public sealed class ConfigMonitor 5 { 6 /// <summary> 7 /// 配置文件路径 8 /// </summary> 9 private static string path = AppDomain.CurrentDomain.SetupInformation.ApplicationBase; 10 11 /// <summary> 12 /// 配置文件路径 13 /// </summary> 14 public static string Path 15 { 16 get 17 { 18 return path; 19 } 20 21 set 22 { 23 path = value; 24 } 25 } 26 27 /// <summary> 28 /// 配置文件名称 29 /// </summary> 30 private static string filter = "\Web.config"; 31 32 /// <summary> 33 /// 配置文件名称 34 /// </summary> 35 public static string Filter 36 { 37 get 38 { 39 return filter; 40 } 41 42 set 43 { 44 filter = value; 45 } 46 } 47 48 /// <summary> 49 /// 配置文件更改委托定义 50 /// </summary> 51 public delegate void EventHandlerAfterConfigModify(); 52 53 /// <summary> 54 /// 配置文件更改事件 55 /// </summary> 56 public static event EventHandlerAfterConfigModify ConfigModifyInfoEvent; 57 58 /// <summary> 59 /// 配置对象 60 /// </summary> 61 public static Configuration Config { get; private set; } 62 63 /// <summary> 64 /// Initializes static members of the <see cref="ConfigMonitor"/> class. 65 /// 构造函数 66 /// </summary> 67 static ConfigMonitor() 68 { 69 MonitorConfigFile(); 70 InitConnectionConfig(); 71 } 72 73 /// <summary> 74 /// 创建配置文件发动监听器 75 /// </summary> 76 private static void MonitorConfigFile() 77 { 78 FileSystemWatcher fileWatcher = new FileSystemWatcher 79 { 80 Path = Path, 81 Filter = Filter, 82 NotifyFilter = NotifyFilters.CreationTime | NotifyFilters.LastWrite | NotifyFilters.FileName 83 }; 84 85 fileWatcher.Changed += OnChanged; 86 fileWatcher.Created += OnChanged; 87 fileWatcher.Deleted += OnChanged; 88 fileWatcher.Renamed += OnChanged; 89 fileWatcher.EnableRaisingEvents = true; 90 } 91 92 /// <summary> 93 /// 更改处理事件 94 /// </summary> 95 /// <param name="source">事件源</param> 96 /// <param name="e">事件参数</param> 97 private static void OnChanged(object source, FileSystemEventArgs e) 98 { 99 InitConnectionConfig(); 100 RaiseEvent(); 101 } 102 103 /// <summary> 104 /// 向订阅者发布信息 105 /// </summary> 106 private static void RaiseEvent() 107 { 108 if (ConfigModifyInfoEvent != null) 109 { 110 ConfigModifyInfoEvent(); 111 } 112 } 113 114 /// <summary> 115 /// 初始化所有连接配置 116 /// </summary> 117 private static void InitConnectionConfig() 118 { 119 string filePath = Path + Filter; 120 var map = new ExeConfigurationFileMap { ExeConfigFilename = filePath }; 121 Config = ConfigurationManager.OpenMappedExeConfiguration(map, ConfigurationUserLevel.None); 122 } 123 }