【原创】App.Config文件的读写

using  System;
using  System.Collections.Generic;
using  System.Text;
using  System.Configuration;
using  System.Collections;

namespace  ServicesConfiguration
{
    
public class ConfigurationDispose
    
{
        
public ConfigurationDispose()
        
{
        }


        GetConfiguration
GetConfiguration#region GetConfiguration
        
/**//**//**//// <summary>
        
/// 取得appSettings里的值
        
/// </summary>
        
/// <param name="key"></param>
        
/// <returns></returns>

        public static string GetConfiguration(string key)
        
{
            
return ConfigurationManager.AppSettings[key];
        }

        
#endregion


        GetConfigurationList
GetConfigurationList#region GetConfigurationList
        
/**//**//**//// <summary>
        
/// 取得appSettings里的值列表
        
/// </summary>
        
/// <param name="filePath">配置文件路径</param>
        
/// <returns>值列表</returns>

        public static KeyValueConfigurationCollection GetConfigurationList(string filePath)
        
{
            AppSettingsSection appSection 
= null;                       //AppSection对象
            Configuration configuration = null;                         //Configuration对象     
            KeyValueConfigurationCollection k = null;                   //返回的键值对类型

            configuration 
= ConfigurationManager.OpenExeConfiguration(filePath);

            
//取得AppSettings节
            appSection = (AppSettingsSection)configuration.Sections["appSettings"];

            
//取得AppSetting节的键值对
            k = appSection.Settings;

            
return k;
                    
        }

        
#endregion


        SetConfiguration
SetConfiguration#region SetConfiguration
        
/**//**//**//// <summary>
        
/// 设置appSetting的值
        
/// </summary>
        
/// <param name="key"></param>
        
/// <param name="value"></param>
        
/// <param name="filePath">App.config文件路径</param>

        public static void SetConfiguration(string key, string value,string filePath)
        
{
            Configuration configuration 
= null;                 //Configuration对象
            AppSettingsSection appSection = null;               //AppSection对象
          
            configuration 
= ConfigurationManager.OpenExeConfiguration(filePath);
            
            
//取得AppSetting节
            appSection = configuration.AppSettings;

            
//赋值并保存
            appSection.Settings[key].Value = value;
            configuration.Save();
            

        }

        
#endregion


        SetConfiguration
SetConfiguration#region SetConfiguration
        
/**//**//**//// <summary>
        
/// 设置appSetting的值
        
/// </summary>
        
/// <param name="key"></param>
        
/// <param name="value"></param>

        public static void SetConfiguration(string key, string value)
        
{
            AppSettingsSection appSection 
= null;               //AppSection对象

            appSection 
= ConfigurationManager.GetSection("appSettings");

            appSection.Settings[key].Value 
= value;

        }

        
#endregion

    }


}

自己做的小例子,很简单,就是一个读取其中配置信息
 
App.Config
<? xml version="1.0" encoding="utf-8"  ?>
< configuration >
  
< appSettings >
    
< add  key ="User"  value ="Mgod" />
    
  
</ appSettings >

</ configuration >
using System.Configuration


        
private void button1_Click(object sender, EventArgs e)
        {
            
//this.textBox1.Text = ConfigurationManager.AppSettings["User"];//使用它必须引用System.configuration程序集
            this.textBox1.Text= ConfigurationSettings.AppSettings["User"];//虽然已过失,但是还能用!
        }

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