如何在app.config中創建自定義配置節？

Question

我想在我的app.config文件中添加自定義配置部分。 有沒有辦法做到這一點，我怎樣才能在我的程序中訪問這些設置。 以下是配置節我要添加到我的app.config：

<RegisterCompanies> 
    <Companies> 
     <Company name="Tata Motors" code="Tata"/> 
     <Company name="Honda Motors" code="Honda"/> 
    </Companies> 
</RegisterCompanies> 

Answer 1

創建的ConfigurationElement公司：

public class Company : ConfigurationElement 
{ 

     [ConfigurationProperty("name", IsRequired = true)] 
     public string Name 
     { 
      get 
      { 
       return this["name"] as string; 
      } 
     } 
      [ConfigurationProperty("code", IsRequired = true)] 
     public string Code 
     { 
      get 
      { 
       return this["code"] as string; 
      } 
     } 
} 

ConfigurationElementCollection中：

public class Companies 
     : ConfigurationElementCollection 
    { 
     public Company this[int index] 
     { 
      get 
      { 
       return base.BaseGet(index) as Company ; 
      } 
      set 
      { 
       if (base.BaseGet(index) != null) 
       { 
        base.BaseRemoveAt(index); 
       } 
       this.BaseAdd(index, value); 
      } 
     } 

     public new Company this[string responseString] 
     { 
      get { return (Company) BaseGet(responseString); } 
      set 
      { 
       if(BaseGet(responseString) != null) 
       { 
        BaseRemoveAt(BaseIndexOf(BaseGet(responseString))); 
       } 
       BaseAdd(value); 
      } 
     } 

     protected override System.Configuration.ConfigurationElement CreateNewElement() 
     { 
      return new Company(); 
     } 

     protected override object GetElementKey(System.Configuration.ConfigurationElement element) 
     { 
      return ((Company)element).Name; 
     } 
    } 

和配置節：

public class RegisterCompaniesConfig 
     : ConfigurationSection 
    { 

     public static RegisterCompaniesConfig GetConfig() 
     { 
      return (RegisterCompaniesConfig)System.Configuration.ConfigurationManager.GetSection("RegisterCompanies") ?? new RegisterCompaniesConfig(); 
     } 

     [System.Configuration.ConfigurationProperty("Companies")] 
      [ConfigurationCollection(typeof(Companies), AddItemName = "Company")] 
     public Companies Companies 
     { 
      get 
      { 
       object o = this["Companies"]; 
       return o as Companies ; 
      } 
     } 

    } 

，您還必須註冊在web.config中（新的配置部分的應用程序。配置）：

<configuration>  
    <configSections> 
      <section name="Companies" type="blablabla.RegisterCompaniesConfig" ..> 

然後你

var config = RegisterCompaniesConfig.GetConfig(); 
foreach(var item in config.Companies) 
{ 
    do something .. 
} 

Answer 2

你應該檢查喬恩Rista的三部系列在.NET 2.0配置了CodeProject上。

• Unraveling the mysteries of .NET 2.0 configuration
• Decoding the mysteries of .NET 2.0 configuration
• Cracking the mysteries of .NET 2.0 configuration

強烈推薦，寫得很好，非常有幫助！

它非常清楚地向您顯示如何編寫必要的類（從ConfigurationElement和/或ConfigurationSection派生），以設計您需要的自定義配置節。