读取配置文件 某节点值

public static string GetAppValue(string sKeyName)
       {
           object oResult = System.Configuration.ConfigurationManager.AppSettings[sKeyName];
           if (oResult != null)
           {
               return oResult.ToString();
           }

           return "";
       }

配置文件如下：

<?xml version="1.0"?>
<configuration>
<startup><supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.0"/></startup>

  <appSettings>
    <add key="SqliteDbPath" value="D:\baiDuYun\bin\Debug\Data\MetroGuide.db"/>
    <add key="DefaultStart" value="共富新村"/>
    <add key="DefaultEnd" value="广兰路"/>
    <add key="RunMode" value="DEV"/> <!--运行模式：DEV,USER --> 
    
    <!-- DevEnvironment(1-win7 64bit .net 4; 2-xp 32bit .net4) -->
    <add key="DevEnvironment" value="1"/> 
  
  </appSettings>

</configuration>