自定义配置app.config

先要写配置类,然后封装成DLL

namespace CustomConfig
{
    public   class DbFactorySection:System.Configuration.ConfigurationSection
    {
        [System.Configuration.ConfigurationProperty("default")]
        public DefaultElement DefaultFactory
        {
            get
            {
                return this["default"] as DefaultElement;
            }
            set
            {
                this["default"] = value;
            }     
        }
        [System.Configuration.ConfigurationProperty("factorys")]
        public FactoryElements Factorys
        {
            get
            {
                return this["factorys"] as FactoryElements;
            }
            set
            {
                this["factorys"] = value;
            }
        
        }

    }
}

namespace CustomConfig
{
    public  class DefaultElement: System.Configuration.ConfigurationElement
    {
        [System.Configuration.ConfigurationProperty("factory")]
        public string Factory
        {
            get
            {
                return this["factory"] as string;
            }
            set
            {
                this["factory"] = value;
            }
        
        }
    }
}

namespace CustomConfig
{
    public class FactoryElement:System.Configuration.ConfigurationElement
    {
        [System.Configuration.ConfigurationProperty("name")]
        public string Name
        {
            get
            {
                return this["name"] as string;
            }
            set
            {
                this["name"] = value;
            }
        }
        [System.Configuration.ConfigurationProperty("assembly")]
        public string Assembly
        {
            get
            {
                return this["assembly"] as string;
            }
            set
            {
                this["assembly"] = value;
            }
        }
        [System.Configuration.ConfigurationProperty("class")]
        public string Class
        {
            get
            {
                return this["class"] as string;
            }
            set
            {
                this["class"] = value;
            }
        }
           
    }
}

namespace CustomConfig
{
    public  class FactoryElements: System.Configuration.ConfigurationElementCollection
    {
        protected override System.Configuration.ConfigurationElement CreateNewElement()
        {
            return new FactoryElement();
        }

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

        /// <summary>
        /// 用于在元素集合中指定名字
        /// </summary>
        /// <param name="name"></param>
        /// <returns></returns>
        public FactoryElement this[string name]
        {
            get
            {
                return BaseGet(name) as FactoryElement;
            }
        }
    }
}

在app.config中加入以下节点:

<configuration>
    <configSections>
      <section  name="dbFactory" type="CustomConfig.DbFactorySection,CustomConfig"/>
    </configSections>
  <dbFactory>
    <default factory="sql">
    </default>
    <factorys>
      <add name="sql" assembly="Hello.Data" class="SqlDbFactory"/>
      <add name="oracle" assembly="Hello.Data" class="OracleDbFactory"/>
    </factorys>
  </dbFactory>

后台中调用:

 DbFactorySection conSection = System.Configuration.ConfigurationManager.GetSection("dbFactory") as CustomConfig.DbFactorySection;

            string strName = conSection.Factorys["sql"].Name.ToString();

可以得到配置节点的信息.

转自:http://www.cnblogs.com/zhaoguihua/archive/2010/01/21/1652847.html