通过ConfigurationSection来轻松地加载配置文件
最近写了一段自定义的ConfigurationSection继承类,通过该class可以轻松得定义和读取配置文件信息,
注意这里使用的是c# 2.0来实现的,相比1.1必须通过实现IConfigurationSectionHandler接口来自定义配置节点类方便多了
不论是web.config还是app.config,都可以使用ConfigurationManager类加载配置文件中自定义的节点内容。
以下是配置文件的层次结构:
注意order和lineItem节点都是允许重复出现的
以下是继承自ConfigurationSection的自定义配置节点类:
注意这里使用的是c# 2.0来实现的,相比1.1必须通过实现IConfigurationSectionHandler接口来自定义配置节点类方便多了
不论是web.config还是app.config,都可以使用ConfigurationManager类加载配置文件中自定义的节点内容。
以下是配置文件的层次结构:
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<?xml version="1.0" encoding="utf-8" ?>
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<configuration>
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<configSections>
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<section name="orders" type="ConsoleTest.OrdersSection, ConsoleTest"/>
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</configSections>
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<orders companyID="2001">
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<order number="100001" amount="222.22">
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<lineItems warehouseNumber="02">
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<lineItem number="00-000-001" description="wii"/>
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</lineItems>
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</order>
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<order number="300001" amount="33.33">
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<lineItems warehouseNumber="99">
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<lineItem number="00-000-001" description="xbox 360"/>
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<lineItem number="00-000-003" description="playstation 3"/>
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</lineItems>
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</order>
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</orders>
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</configuration>
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注意order和lineItem节点都是允许重复出现的
以下是继承自ConfigurationSection的自定义配置节点类:
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public class OrdersSection : ConfigurationSection
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{
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[ConfigurationProperty("companyID", IsRequired = true)]
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public string CompanyID
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{
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get
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{
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return (string)base["companyID"];
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}
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set
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{
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base["companyID"] = value;
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}
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}
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[ConfigurationProperty("", IsDefaultCollection = true)]
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public OrderElementCollection Orders
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{
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get
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{
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return (OrderElementCollection)base[""];
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}
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}
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}
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public class OrderElementCollection : ConfigurationElementCollection
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{
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protected override ConfigurationElement CreateNewElement()
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{
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return new OrderElement();
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}
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protected override object GetElementKey(ConfigurationElement element)
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{
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return ((OrderElement)element).Number;
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}
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public override ConfigurationElementCollectionType CollectionType
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{
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get
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{
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return ConfigurationElementCollectionType.BasicMap;
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}
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}
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protected override string ElementName
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{
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get
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{
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return "order";
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}
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}
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public OrderElement this[int index]
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{
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get
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{
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return (OrderElement)BaseGet(index);
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}
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set
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{
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if (BaseGet(index) != null)
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{
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BaseRemoveAt(index);
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}
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BaseAdd(index, value);
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}
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}
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}
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public class OrderElement : ConfigurationElement
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{
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[ConfigurationProperty("number", IsRequired = true)]
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public string Number
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{
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get
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{
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return (string)base["number"];
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}
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set
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{
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base["number"] = value;
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}
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}
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[ConfigurationProperty("amount", IsRequired = true)]
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public double Amount
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{
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get
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{
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return (double)base["amount"];
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}
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set
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{
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base["amount"] = value;
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}
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}
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[ConfigurationProperty("lineItems", IsDefaultCollection = true)]
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public LineItemElementCollection LineItems
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{
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get
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{
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return (LineItemElementCollection)base["lineItems"];
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}
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}
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}
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public class LineItemElementCollection : ConfigurationElementCollection
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{
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[ConfigurationProperty("warehouseNumber", IsRequired = true)]
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public string WarehouseNumber
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{
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get
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{
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return (string)base["warehouseNumber"];
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}
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set
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{
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base["warehouseNumber"] = value;
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}
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}
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protected override ConfigurationElement CreateNewElement()
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{
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return new LineItemElement();
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}
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protected override object GetElementKey(ConfigurationElement element)
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{
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return ( (LineItemElement)element ).Number;
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}
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public override ConfigurationElementCollectionType CollectionType
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{
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get
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{
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return ConfigurationElementCollectionType.BasicMap;
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}
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}
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protected override string ElementName
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{
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get
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{
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return "lineItem";
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}
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}
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public LineItemElement this[int index]
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{
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get
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{
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return (LineItemElement)BaseGet(index);
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}
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set
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{
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if (BaseGet(index) != null)
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{
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BaseRemoveAt(index);
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}
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BaseAdd(index, value);
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}
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}
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}
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public class LineItemElement : ConfigurationElement
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{
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[ConfigurationProperty("number", IsKey=true, IsRequired = true)]
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public string Number
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{
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get
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{
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return (string)base["number"];
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}
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set
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{
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base["number"] = value;
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}
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}
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[ConfigurationProperty("description", IsRequired = true)]
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public string Description
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{
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get
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{
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return (string)base["description"];
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}
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set
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{
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base["description"] = value;
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}
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}
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}
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