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ASP.NET杂谈-一切都从web.config说起（2）（ConfigSections详解-中）

發(fā)布時間：2025/7/25 asp.net 27 豆豆

生活随笔收集整理的這篇文章主要介紹了 ASP.NET杂谈-一切都从web.config说起（2）（ConfigSections详解-中）小編覺得挺不錯的,現(xiàn)在分享給大家,幫大家做個參考.

我們就接著上一篇繼續(xù)說，上一篇中介紹了ConfigSection的結(jié)構(gòu)和兩個簡單的DEMO，本篇就說一下SectionGroup、ConfigurationElementCollection和key/value pair configurationsection.

的使用。

1、SectionGroup的使用

下面的代碼簡單的說明一下SectionGroup的使用：

1)、首先定義一個繼承ConfigurationSectionGroup的類：

1: /// <summary> 2: /// 自定義SectionGroup 3: /// </summary> 4: public class MySectionGroup:ConfigurationSectionGroup 5: { 6: [ConfigurationProperty("myBlog")] 7: public MySection MyBlog 8: { 9: get 10: { 11: return (MySection)base.Sections["myBlog"]; 12: } 13: } 14: }

2)、其次，在定義一個繼承ConfigurationSection的Section：

1: /// <summary> 2: /// 自定義Section 3: /// </summary> 4: public class MySection:ConfigurationSection 5: { 6: [ConfigurationProperty("name")] 7: public string BlogName 8: { 9: get 10: { 11: return (string)base["name"]; 12: } 13: } 14: [ConfigurationProperty("url")] 15: public string BlogUrl 16: { 17: get 18: { 19: return (string)base["url"]; 20: } 21: } 22: }

下面再討論一下怎么在web.config中如何配置和使用：

web.config中的配置：

1: <configSections> 2: <sectionGroup name="myBlogs" type="KevinDiao.MySectionDemo01.MySectionGroup,KevinDiao.MySectionDemo01"> 3: <section name="myBlog" type="KevinDiao.MySectionDemo01.MySection,KevinDiao.MySectionDemo01"/> 4: </sectionGroup> 5: </configSections> 6: ? 7: <myBlogs> 8: <myBlog name="五香瓜子" url="http://www.cnblogs.com/diaojia/"></myBlog> 9: </myBlogs>

讀取web.config中配置：

1: MySection mySection = ConfigurationManager.GetSection("myBlogs/myBlog") as MySection; 2: Response.Write("博客名稱：" + mySection.BlogName + "<br/>"); 3: Response.Write("博客地址：<a href='" + mySection.BlogUrl + "'>" + mySection.BlogUrl + "</a>");

運(yùn)行得到的結(jié)果：

博客名稱：五香瓜子博客地址：http://www.cnblogs.com/diaojia/

2、ConfigurationElementCollection的使用

??? 下面再來討論一下怎么在ConfigSections中配置自定義集合，我們還是用代碼說明吧。

?? 1)、首先定義一個繼承ConfigurationElement的類。

1: /// <summary> 2: /// 自定義Element 3: /// </summary> 4: public class MyBlogElement:ConfigurationElement 5: { 6: [ConfigurationProperty("name")] 7: public string Name 8: { 9: get 10: { 11: return (string)base["name"]; 12: } 13: } 14: [ConfigurationProperty("url")] 15: public string Url 16: { 17: get 18: { 19: return (string)base["url"]; 20: } 21: } 22: }

它主要包含要配置的主要內(nèi)容。

2)、其次定義一個繼承ConfigurationElementCollection的類

1: /// <summary> 2: /// 自定義ElementCollection 3: /// </summary> 4: public class MyBlogElementCollection:ConfigurationElementCollection 5: { 6: protected override ConfigurationElement CreateNewElement() 7: { 8: return new MyBlogElement(); 9: } 10: protected override object GetElementKey(ConfigurationElement element) 11: { 12: return ((MyBlogElement)element).Name; 13: } 14: public override ConfigurationElementCollectionType CollectionType 15: { 16: get 17: { 18: return ConfigurationElementCollectionType.BasicMap; 19: } 20: } 21: ? 22: protected override string ElementName 23: { 24: get 25: { 26: return "myBlog"; 27: } 28: } 29: public MyBlogElement this[int index] 30: { 31: get 32: { 33: return (MyBlogElement)BaseGet(index); 34: } 35: set 36: { 37: if (BaseGet(index) != null) 38: { 39: BaseRemoveAt(index); 40: } 41: BaseAdd(index, this); 42: } 43: } 44: }

3）、再次定義一個繼承ConfigurationSection的類

1: /// <summary> 2: /// 自定義Section 3: /// </summary> 4: public class MyBlogSection:ConfigurationSection 5: { 6: [ConfigurationProperty("name")] 7: public string Name 8: { 9: get 10: { 11: return (string)base["name"]; 12: } 13: } 14: [ConfigurationProperty("",IsDefaultCollection=true)] 15: public MyBlogElementCollection MyBlogCollection 16: { 17: get 18: { 19: return (MyBlogElementCollection)base[""]; 20: } 21: } 22: ? 23: }

下面在看看怎么在web.config中如何配置：

1: <configSections> 2: <section name ="MyBlogs" type="KevinDiao.MySectionDemo02.MyBlogSection,KevinDiao.MySectionDemo02"/> 3: </configSections> 4: <MyBlogs name="KevinDiao"> 5: <myBlog name="五香瓜子" url="http://www.cnblogs.com/diaojia/"></myBlog> 6: <myBlog name="業(yè)精于勤" url="http://diaojia.blog.51cto.com/"></myBlog> 7: </MyBlogs>

再看看怎么讀取:

1: MyBlogSection mySection = ConfigurationManager.GetSection("MyBlogs") as MyBlogSection; 2: foreach (MyBlogElement item in mySection.MyBlogCollection) 3: { 4: Response.Write("博客名稱：" + item.Name + "<br/>"); 5: Response.Write("博客地址：<a href='" + item.Url + "'>" + item.Url + "</a>" + "<br/>"); 6: Response.Write("-----------------------------------------------------------------<br/>"); 7: }

最后在看看運(yùn)行的結(jié)果：

博客名稱：五香瓜子博客地址：http://www.cnblogs.com/diaojia/ ----------------------------------------------------------------- 博客名稱：業(yè)精于勤博客地址：http://diaojia.blog.51cto.com/ -----------------------------------------------------------------

3、key/value pair configurationsection的使用（例如：appSettings）

最后在簡單的說明一下在web.config中怎么使用key/value pair configurationsection。

1)、首先定義一個繼承ConfigurationElement的類

1: /// <summary> 2: /// 自定義ConfigurationElement 3: /// </summary> 4: public class MyBlogElement: ConfigurationElement 5: { 6: [ConfigurationProperty("name")] 7: public string Name 8: { 9: get 10: { 11: return (string)base["name"]; 12: } 13: } 14: [ConfigurationProperty("url")] 15: public string Url 16: { 17: get 18: { 19: return (string)base["url"]; 20: } 21: } 22: }

其實(shí)和在2、ConfigurationElementCollection的使用中的差不多。

2)、其次在定義一個繼承ConfigurationElementCollection的類：

1: /// <summary> 2: /// 自定義ConfigurationElementCollection 3: /// </summary> 4: public class MyBlogsElectionCollection:ConfigurationElementCollection 5: { 6: protected override ConfigurationElement CreateNewElement() 7: { 8: return new MyBlogElement(); 9: } 10: ? 11: protected override object GetElementKey(ConfigurationElement element) 12: { 13: return ((MyBlogElement)element).Name; 14: } 15: }

3）、再次就是定義一個繼承ConfigurationSection的類

1: /// <summary> 2: /// 自定義Section 3: /// </summary> 4: public class MyBlogsSection : ConfigurationSection 5: { 6: [ConfigurationProperty("name")] 7: public string Name 8: { 9: get 10: { 11: return (string)base["name"]; 12: } 13: } 14: [ConfigurationProperty("",IsDefaultCollection=true)] 15: public MyBlogsElectionCollection MyBlogs 16: { 17: get 18: { 19: return (MyBlogsElectionCollection)base[""]; 20: } 21: } 22: }

下面在看看怎么在web.config中如何配置：

1: <configSections> 2: <section name="MyBlogs" type="KevinDiao.MySectionDemo03.MyBlogsSection,KevinDiao.MySectionDemo03"/> 3: </configSections> 4: <MyBlogs name="KevinDiao"> 5: <add name="五香瓜子" url="http://www.cnblogs.com/diaojia/"></add> 6: <add name="業(yè)精于勤" url="http://diaojia.blog.51cto.com/"></add> 7: </MyBlogs>

再看看怎么讀取:

1: MyBlogsSection mySection = ConfigurationManager.GetSection("MyBlogs") as MyBlogsSection; 2: foreach (MyBlogElement item in mySection.MyBlogs) 3: { 4: Response.Write("博客名稱：" + item.Name + "<br/>"); 5: Response.Write("博客地址：<a href='" + item.Url + "'>" + item.Url + "</a>" + "<br/>"); 6: Response.Write("-----------------------------------------------------------------<br/>"); 7: }

最后在看看運(yùn)行的結(jié)果：

最后在附上本篇的代碼：DEMO

REFERENCE FROM :?http://www.cnblogs.com/diaojia/archive/2011/04/06/2007350.html

參考：

MSDN

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