如何从web.config中读取自定义节下的所有元素
本文关键字:元素 自定义 读取 web config | 更新日期: 2023-09-27 18:12:30
我想通过useragent和regex过滤一些浏览器,所以把过滤规则放在web中。Config似乎是个不错的解决方案。
但是我不知道如何从web.config中读取自定义部分下的所有元素。
<configuration>
<system.webServer>
<modules>
<add name="ViewFilterModule" type="ViewFilterModule"/>
</modules>
<configSections>
<sectionGroup name="ViewFilterGroup">
<section
name="ViewFilter"
type="CMG.ViewFilter"
allowLocation="true"
allowDefinition="Everywhere"
/>
</sectionGroup>
</configSections>
<ViewFilterGroup>
<ViewFilter name="ucweb" regex="ucweb" redirect="~/ucweb.html" />
<ViewFilter name="operamini" regex="opera mini" redirect="~/operamini.html" />
<ViewFilter name="ucweb" regex="ucweb" redirect="~/ucweb.html" />
<ViewFilter name="operamini" regex="opera mini" redirect="~/operamini.html" />
<ViewFilter name="ucweb" regex="ucweb" redirect="~/ucweb.html" />
<ViewFilter name="operamini" regex="opera mini" redirect="~/operamini.html" />
</ViewFilterGroup>
</system.webServer>
</configuration>
这是我的代码:
public class ViewFilterSection : ConfigurationSection
{
[ConfigurationProperty("name", DefaultValue = "", IsRequired = true)]
[StringValidator(InvalidCharacters = "~!@#$%^&*()[]{}/;''"|''", MinLength = 1, MaxLength = 20)]
public String Name
{
get
{
return (String)this["name"];
}
set
{
this["name"] = value;
}
}
[ConfigurationProperty("regex", DefaultValue = "", IsRequired = false)]
public String Regex
{
get
{ return (String)this["regex"]; }
set
{ this["regex"] = value; }
}
[ConfigurationProperty("redirect", DefaultValue = "", IsRequired = false)]
public String Redirect
{
get
{ return (String)this["redirect"]; }
set
{ this["redirect"] = value; }
}
}
我只想在自定义模块中读取ViewFilterGroup
下的所有ViewFilter
元素。
你错过了几件事。
首先,我们需要一个对应于你的ViewFilter
的类我们将把你所有的属性移到那里,比如:
public class ViewFilterElement : ConfigurationElement
{
[ConfigurationProperty("name", DefaultValue = "", IsRequired = true)]
[StringValidator(InvalidCharacters = "~!@#$%^&*()[]{}/;''"|''", MinLength = 1, MaxLength = 20)]
public String Name
{
get { return (String)this["name"]; } set { this["name"] = value; }
}
[ConfigurationProperty("regex", DefaultValue = "", IsRequired = false)]
public String Regex
{
get { return (String)this["regex"]; } set { this["regex"] = value; }
}
[ConfigurationProperty("redirect", DefaultValue = "", IsRequired = false)]
public String Redirect
{
get { return (String)this["redirect"]; } set { this["redirect"] = value; }
}
}
然后有一个ConfigurationElementCollection
属性对应于你的ViewFilterGroup
:
public class ViewFilterCollection : ConfigurationElementCollection
{
protected override ConfigurationElement CreateNewElement()
{
return new ViewFilterElement();
}
protected override object GetElementKey(ConfigurationElement element)
{
return ((ViewFilterElement)element).Name;
}
}
然后在你的ViewFilterSection
类,你可以有一个属性,返回一个列表在你的新的ViewFilterElement
类型,像这样
public class ViewFilterSection : ConfigurationSection
{
[ConfigurationProperty("", IsRequired = true, IsDefaultCollection = true)]
[ConfigurationCollection(typeof(ViewFilterCollection), AddItemName = "ViewFilter")]
private ViewFilterCollection ViewFilterCollection
{
get { return (ViewFilterCollection)this[string.Empty]; }
set { this[string.Empty] = value; }
}
public static List<ViewFilterElement> ViewFilters
{
get
{
ViewFilterSection sec = (ViewFilterSection)ConfigurationManager.GetSection("ViewFilterGroup");
return sec.ViewFilterCollection.As<ViewFilterElement>().ToList();
}
}
}