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();
       }
   }
}