Custom Configuration 的两种方法：1.Configuration Sections

第一种Configuration Sections

1.App.config

2.CustomConfigurationManager.cs

3.TestProgram.cs.

App.config

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
    <configSections>
        <section name="CustomSettings" type="CustomConfigurationSection.CustomSettingsConfigurationSection,CustomConfigurationSection"/>
    </configSections>
    <appSettings></appSettings>
    <CustomSettings>
        <SElement name="name01" value="value01" />
        <MElement name="mElement">
            <SElement01 name="name02" value="value02" />
            <SElement02 name="name03" value="value03" />
        </MElement>
        <CElement>
            <add key="key01" value="value04" />
            <add key="key02" value="value05" />
        </CElement>
        <NElement>
            <add key="key03" value="value06">
                <SElement03 name="name04" value="value07" />
            </add>
            <add key="key04" value="value08">
                <SElement03 name="name05" value="value09" />
            </add>
        </NElement>
        <M2Element>
            <SElement name="name06" value="value10" />
            <SElement name="name07" value="value11" />
        </M2Element>
  </CustomSettings>
</configuration>

CustomConfigurationManager.cs

using System;
using System.Collections.Generic;
using System.Xml.Linq;
using System.Text;
using System.IO;
using System.Configuration;
using System.Xml;
using System.Xml.XPath;
using System.Xml.Serialization;

namespace CustomConfigurationSection
{
    public class CustomSettingsConfigurationSection : ConfigurationSection
    {
        [ConfigurationProperty("SElement")]
        public SElement SElement
        {
            get { return (SElement)this["SElement"]; }
        }

        [ConfigurationProperty("MElement")]
        public MElement MElement
        {
            get { return (MElement)this["MElement"]; }
        }

        [ConfigurationProperty("CElement")]
        public TElementCollection CElement
        {
            get { return (TElementCollection)this["CElement"]; }
        }

        [ConfigurationProperty("NElement")]
        public NElementCollection NElement
        {
            get { return (NElementCollection)this["NElement"]; }
        }

        [ConfigurationProperty("M2Element")]
        [ConfigurationCollection(typeof(SElement),AddItemName="SElement")]
        public SElementCollection M2Element
        {
            get { return (SElementCollection)this["M2Element"]; }
        }
    }

    public class SElement : ConfigurationElement
    {
        [ConfigurationProperty("name")]
        public String Name
        {
            get
            {
                return (String)this["name"];
            }
            set
            {
                this["name"] = value;
            }
        }
        [ConfigurationProperty("value")]
        public String Value
        {
            get
            {
                return (String)this["value"];
            }
            set
            {
                this["value"] = value;
            }
        }
    }

    public class MElement : ConfigurationElement
    {
        [ConfigurationProperty("name")]
        public string Name
        {
            get { return (string)this["name"]; }
        }

        [ConfigurationProperty("SElement01")]
        public SElement SElement01
        {
            get { return (SElement)this["SElement01"]; }
        }
        [ConfigurationProperty("SElement02")]
        public SElement SElement02
        {
            get { return (SElement)this["SElement02"]; }
        }
    }
    
    public class TElement : ConfigurationElement
    {
        [ConfigurationProperty("key")]
        public String Key
        {
            get
            {
                return (String)this["key"];
            }
            set
            {
                this["key"] = value;
            }
        }

        [ConfigurationProperty("value")]
        public String Value
        {
            get
            {
                return (String)this["value"];
            }
            set
            {
                this["value"] = value;
            }
        }
    }

    public class NElement : ConfigurationElement
    {
        [ConfigurationProperty("key")]
        public String Key
        {
            get
            {
                return (String)this["key"];
            }
            set
            {
                this["key"] = value;
            }
        }

        [ConfigurationProperty("value")]
        public String Value
        {
            get
            {
                return (String)this["value"];
            }
            set
            {
                this["value"] = value;
            }
        }

        [ConfigurationProperty("SElement03")]
        public SElement NestedElement
        {
            get { return (SElement)this["SElement03"]; }
        }
    }

    public class TElementCollection : ConfigurationElementCollection
    {
        protected override ConfigurationElement CreateNewElement()
        {
            return new TElement();
        }

        protected override object GetElementKey(ConfigurationElement item)
        {
            TElement element = (TElement)item;
            return getKey(element);
        }

        public TElement this[int index]
        {
            get
            {
                return (TElement)BaseGet(index);
            }
            set
            {
                if (BaseGet(index) != null)
                {
                    BaseRemove(index);
                }
                BaseAdd(index, value);
            }
        }

        public new TElement this[string name]
        {
            get
            {
                return (TElement)BaseGet(name);
            }
        }

        public new int Count
        {
            get { return base.Count; }
        }

        public int IndexOf(TElement item)
        {
            return BaseIndexOf(item);
        }

        public void RemoveAt(int index)
        {
            BaseRemoveAt(index);
        }

        public void Add(TElement item)
        {
            BaseAdd(item);
        }

        public void Clear()
        {
            BaseClear();
        }

        public bool Contains(TElement item)
        {
            return BaseIndexOf(item) >= 0;
        }

        public void CopyTo(TElement[] array, int arrayIndex)
        {
            base.CopyTo(array, arrayIndex);
        }

        public new bool IsReadOnly
        {
            get { return false; }
        }

        public bool Remove(TElement item)
        {
            if (BaseIndexOf(item) >= 0)
            {
                BaseRemove(item);
                return true;
            }
            return false;
        }

        private string getKey(TElement item)
        {
            return item.Key;
        }
    }

    public class NElementCollection : ConfigurationElementCollection
    {
        protected override ConfigurationElement CreateNewElement()
        {
            return new NElement();
        }

        protected override object GetElementKey(ConfigurationElement item)
        {
            NElement element = (NElement)item;
            return getKey(element);
        }

        public NElement this[int index]
        {
            get
            {
                return (NElement)BaseGet(index);
            }
            set
            {
                if (BaseGet(index) != null)
                {
                    BaseRemove(index);
                }
                BaseAdd(index, value);
            }
        }

        public new NElement this[string name]
        {
            get
            {
                return (NElement)BaseGet(name);
            }
        }

        public new int Count
        {
            get { return base.Count; }
        }

        public int IndexOf(NElement item)
        {
            return BaseIndexOf(item);
        }

        public void RemoveAt(int index)
        {
            BaseRemoveAt(index);
        }

        public void Add(NElement item)
        {
            BaseAdd(item);
        }

        public void Clear()
        {
            BaseClear();
        }

        public bool Contains(NElement item)
        {
            return BaseIndexOf(item) >= 0;
        }

        public void CopyTo(NElement[] array, int arrayIndex)
        {
            base.CopyTo(array, arrayIndex);
        }

        public new bool IsReadOnly
        {
            get { return false; }
        }

        public bool Remove(NElement item)
        {
            if (BaseIndexOf(item) >= 0)
            {
                BaseRemove(item);
                return true;
            }
            return false;
        }

        private string getKey(NElement item)
        {
            return item.Key;
        }
    }

    public class SElementCollection : ConfigurationElementCollection
    {
        protected override ConfigurationElement CreateNewElement()
        {
            return new SElement();
        }

        protected override object GetElementKey(ConfigurationElement item)
        {
            SElement element = (SElement)item;
            return getKey(element);
        }

        public SElement this[int index]
        {
            get
            {
                return (SElement)BaseGet(index);
            }
            set
            {
                if (BaseGet(index) != null)
                {
                    BaseRemove(index);
                }
                BaseAdd(index, value);
            }
        }

        public new SElement this[string name]
        {
            get
            {
                return (SElement)BaseGet(name);
            }
        }

        public new int Count
        {
            get { return base.Count; }
        }

        public int IndexOf(SElement item)
        {
            return BaseIndexOf(item);
        }

        public void RemoveAt(int index)
        {
            BaseRemoveAt(index);
        }

        public void Add(SElement item)
        {
            BaseAdd(item);
        }

        public void Clear()
        {
            BaseClear();
        }

        public bool Contains(SElement item)
        {
            return BaseIndexOf(item) >= 0;
        }

        public void CopyTo(SElement[] array, int arrayIndex)
        {
            base.CopyTo(array, arrayIndex);
        }

        public new bool IsReadOnly
        {
            get { return false; }
        }

        public bool Remove(SElement item)
        {
            if (BaseIndexOf(item) >= 0)
            {
                BaseRemove(item);
                return true;
            }
            return false;
        }

        private string getKey(SElement item)
        {
            return item.Name;
        }
    }

}

TestProgram.cs

using System;
using System.Collections;
using System.Diagnostics;
using System.IO;
using System.Xml;
using System.Xml.Linq;
using System.Xml.Serialization;
using System.Xml.XPath;
using System.Configuration;

namespace CustomConfigurationSection
{
    public class Program
    {
        static void Main(string[] args)
        {
            try
            {
                CustomSettingsConfigurationSection config = (CustomSettingsConfigurationSection)System.Configuration.ConfigurationManager.GetSection("CustomSettings");
            }
            catch (Exception ex)
            {
                System.Diagnostics.Debug.WriteLine(ex.Message);
            }
        }
    }
}

http://blog.csdn.net/zpx3243/article/details/5970585