我在閱讀'App.config'中的設置。我只是想出瞭如何使用ConfigurationSection
,ConfigurationElementCollection
和ConfigurationelElement
。爲什麼我不能將屬性轉換爲嵌套元素?
的App.config:
<?xml version="1.0" encoding="utf-8" ?>
<configuration>
<configSections>
<sectionGroup name="notificationSettingsGroup">
<section name="mailTemplates" type="Project.Lib.Configuration.MailTemplateSection, Project.Lib"
allowDefinition="Everywhere" allowExeDefinition="MachineToApplication" requirePermission="false"/>
</sectionGroup>
</configSections>
<notificationSettingsGroup>
<mailTemplates>
<items>
<mailTemplate name="actionChain" subject="Subject bla-bla">
<body>Body bla-bla</body>
</mailTemplate>
</items>
</mailTemplates>
</notificationSettingsGroup>
<startup>
<supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.0"/>
</startup>
</configuration>
我的C#代碼:
public class MailTemplateSection : ConfigurationSection
{
[ConfigurationProperty("items", IsDefaultCollection = false)]
public MailTemplateCollection MailTemplates
{
get { return (MailTemplateCollection)this["items"]; }
set { this["items"] = value; }
}
}
[ConfigurationCollection(typeof(MailTemplateElement), AddItemName = "mailTemplate",
CollectionType = ConfigurationElementCollectionType.AddRemoveClearMap)]
public class MailTemplateCollection : ConfigurationElementCollection
{
protected override ConfigurationElement CreateNewElement()
{
return new MailTemplateElement();
}
protected override object GetElementKey(ConfigurationElement element)
{
return ((MailTemplateElement) element).Name;
}
}
public class MailTemplateElement : ConfigurationElement
{
[ConfigurationProperty("name", DefaultValue = "action", IsKey = true, IsRequired = true)]
public string Name
{
get { return (string)this["name"]; }
set { this["name"] = value; }
}
[ConfigurationProperty("subject", DefaultValue = "Subject", IsKey = false, IsRequired = true)]
public string Subject
{
get { return (string)this["subject"]; }
set { this["subject"] = value; }
}
[ConfigurationProperty("body", DefaultValue = "Body", IsKey = false, IsRequired = true)]
public string Body
{
get { return (string)this["body"]; }
set { this["body"] = value; }
}
}
和工作代碼:
class Program
{
static void Main(string[] args)
{
Configuration config =
ConfigurationManager.OpenExeConfiguration(
ConfigurationUserLevel.None);
var mailTemplatesSection =
config.GetSection("notificationSettingsGroup/mailTemplates") as MailTemplateSection;
}
}
所有作品,當我聲明瞭字段作爲XML屬性。但是,當我嘗試將屬性轉換爲嵌套元素 - 「Property'Body'不是ConfigurationElement」錯誤發生。
我在做什麼錯?
請參閱此[在自定義配置中如何使用文本元素而不是屬性](http://stackoverflow.com/questions/5078758/can-i-add-a-textnode-instead-of-an-attribute-in -a-net-configurationsection) –