C# 读取保存App.config配置文件的完整源码参考

// ------------------------------------------------------------
//  All Rights Reserved , Copyright (C) 2010 , CDPF , Ltd. 
// ------------------------------------------------------------

using  System;
using  System.Configuration;
using  System.Windows.Forms;
using  Utilities;

namespace  DirectSeeding
{
     ///   <summary>
     ///     FrmConfig
     ///  读取配置文件
     ///  
     ///  修改纪录
     ///  
     ///         2011.01.14 版本：   1.0 JiRiGaLa 完善程序的注释等、从新整理代码。
     ///     
     ///  版本：1.0
     ///
     ///   <author>
     ///          <name> JiRiGaLa </name>
     ///          <date> 2011.01.14 </date>
     ///   </author>  
     ///   </summary>
     public   partial   class  FrmConfig : Form
    {
         public  FrmConfig()
        {
            InitializeComponent();
        }

         ///   <summary>
         ///  读取配置文件
         ///   </summary>
         private   void  GetConfig()
        {
             this .txtWriteFileName.Text  =  ConfigurationManager.AppSettings[ " WriteFileName " ];
             this .txtWritePath.Text  =  ConfigurationManager.AppSettings[ " WritePath " ].Replace( " | " , Environment.NewLine);
             this .txtPostMessageURL.Text  =  ConfigurationManager.AppSettings[ " PostMessageURL " ];
             this .txtLeasedLineURL.Text  =  ConfigurationManager.AppSettings[ " LeasedLineURL " ];
        }

         private   void  FrmDirectSeeding_Load( object  sender, EventArgs e)
        {
             this .GetConfig();
        }

         ///   <summary>
         ///  保存配置文件
         ///   </summary>
         private   void  SaveConfig()
        {
             //  写入参数设置
            Configuration configuration  =  ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.None);
            configuration.AppSettings.Settings[ " WriteFileName " ].Value  =   this .txtWriteFileName.Text;
            configuration.AppSettings.Settings[ " WritePath " ].Value  =   this .txtWritePath.Text.Trim().Replace(Environment.NewLine,  " | " );
            configuration.AppSettings.Settings[ " PostMessageURL " ].Value  =   this .txtPostMessageURL.Text;
            configuration.AppSettings.Settings[ " LeasedLineURL " ].Value  =   this .txtLeasedLineURL.Text;
            configuration.Save();

             //  重新读取参数
            ConfigurationManager.RefreshSection( " appSettings " );
            WriteFile.WriteFileName  =  ConfigurationManager.AppSettings[ " WriteFileName " ];
            WriteFile.WritePath  =  ConfigurationManager.AppSettings[ " WritePath " ].Split( ' | ' );
            PostMessage.PostMessageURL  =  ConfigurationManager.AppSettings[ " PostMessageURL " ];
             //  PostMessage.LeasedLineURL = ConfigurationManager.AppSettings["LeasedLineURL"];
        }

         private   void  btnSavaConfig_Click( object  sender, EventArgs e)
        {
             //  保存设置
            SaveConfig();
        }
    }
}