C#加密app.config中连接字符串的方法

本文实例讲述了c#加密app.config中连接字符串的方法。分享给大家供大家参考。具体如下：

连接字符串中包含数据库的访问信息，帐号和密码，因此一般不以明文显示，本代码用来加密连接字符串。

public static class encryptconnection
{
  public static void encryptconnectionstring(bool encrypt)
  {
   configuration configfile = null;
   try
   {
    // open the configuration file and retrieve the connectionstrings section.
    configfile = configurationmanager.openexeconfiguration(configurationuserlevel.none);
    connectionstringssection configsection = configfile.getsection("connectionstrings") as connectionstringssection;
    if ((!(configsection.elementinformation.islocked)) && (!(configsection.sectioninformation.islocked)))
    {
     if (encrypt && !configsection.sectioninformation.isprotected)
     //encrypt is false to unencrypt
     {
      configsection.sectioninformation.protectsection("dataprotectionconfigurationprovider");
     }
     if (!encrypt && configsection.sectioninformation.isprotected)
     //encrypt is true so encrypt
     {
      configsection.sectioninformation.unprotectsection();
     }
     //re-save the configuration file section
     configsection.sectioninformation.forcesave = true;
     // save the current configuration.
     configfile.save();
    }    
   }
   catch (system.exception ex)
   {
    throw (ex);
   }
   finally
   {
   }
  }
}

希望本文所述对大家的c#程序设计有所帮助。