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自定义配置文件的使用
经常在使用APP.CONFIG 或WEB.CONFIG
时,发现系统中的配置无法满足自己的需求。这时就需要自定义的配置文件处理:
现需要在配置文件中定义可增加删除任务的功能。可根据需要增加一个或删除任务。
定义配置节点
/// <summary> /// MRP自定义配置类 /// </summary> public class MRPSection : ConfigurationSection { /// <summary> /// Gets the tasks. /// </summary> /// <value>The tasks.</value> [ConfigurationProperty("", IsDefaultCollection = true)] public TaskCollectionElement Tasks { get { return (TaskCollectionElement)this[""]; } } }
配置集合
/// <summary> /// 任务集合 /// </summary> public class TaskCollectionElement : ConfigurationElementCollection { protected override ConfigurationElement CreateNewElement() { return new TaskElement(); } protected override object GetElementKey(ConfigurationElement element) { return ((TaskElement)element).CompanyID; } public override ConfigurationElementCollectionType CollectionType { get { return ConfigurationElementCollectionType.BasicMap; } } protected override string ElementName { get { return "Task"; } } public TaskElement this[int index] { get { return (TaskElement)BaseGet(index); } set { if (BaseGet(index) != null) { BaseRemoveAt(index); } BaseAdd(index, value); } } }
定义任务类
public class TaskElement : ConfigurationElement { [ConfigurationProperty("CompanyID", IsRequired = true)] public string CompanyID { get { return (string)base["CompanyID"]; } } [ConfigurationProperty("DatabaseName", IsRequired = true)] //[RegexStringValidator(可以在这里用正则验证配置文件中的值是否正确)] public string DatabaseName { get { return this["DatabaseName"] as string; } } [ConfigurationProperty("Level", IsRequired = true)] public string Level { get { return this["Level"] as string; } }
[ConfigurationProperty("AppIP", IsRequired = true)] public string AppIP { get { return this["AppIP"].ToString(); } } [ConfigurationProperty("AppName", IsRequired = true)] public string AppName { get { return this["AppName"].ToString(); } } }
配置文件如下
<?xml version="1.0" encoding="utf-8" ?> <configuration> <configSections> <section name="MRPSetting" type="MRP.MRPSection,MRP"/> </configSections> <MRPSetting > <Task CompanyID="e1" DatabaseName="e1" Level="2" AppIP="192.168.1.1" AppName="host"/> <Task CompanyID="e2" DatabaseName="e2" Level="3" AppIP="192.168.1.1" AppName="host"/> <Task CompanyID="e3" DatabaseName="e3" Level="1" AppIP="192.168.1.1" AppName="host"/> </MRPSetting> </configuration>
如何访问:
MRPSection mrpsetting = (MRPSection)ConfigurationManager.GetSection("MRPSetting"); foreach (TaskElement task in mrpsetting.Tasks) { Console.WriteLine(task.CompanyID); }
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若自定义的节点不需要集合类,则只需要如下定义即可
public class TaskSection : ConfigurationSection { [ConfigurationProperty("CompanyID", IsRequired = true)] public string CompanyID { get { return (string)base["CompanyID"]; } } [ConfigurationProperty("DatabaseName", IsRequired = true)] //[RegexStringValidator(可以在这里用正则验证配置文件中的值是否正确)] public string DatabaseName { get { return this["DatabaseName"] as string; } } [ConfigurationProperty("Level", IsRequired = true)] public string Level { get { return this["Level"] as string; } } [ConfigurationProperty("AppIP", IsRequired = true)] public string AppIP { get { return this["AppIP"].ToString(); } } [ConfigurationProperty("AppName", IsRequired = true)] public string AppName { get { return this["AppName"].ToString(); } } }
<?xml version="1.0" encoding="utf-8" ?> <configuration> <configSections> <section name="Task" type="MRPAutoRun.TaskSection,MRPAutoRun"/> </configSections> <Task CompanyID="e1" DatabaseName="e1" Level="24" AppIP="192.168.1.1" AppName="host"/> </configuration>
此Task节点不可以重复,否则系统运行通不过。
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