c# - xpath 查询以选择具有和条件的节点

Question

<?xml version="1.0"?>  
<AppXmlLogWritter>  
  <LogData>  
    <LogID>235820130202134128634953894887814709273</LogID>  
    <LogDateTime>20130202134128</LogDateTime>  
    <LogType>Warning</LogType>  
    <LogFlag>PACSFlag</LogFlag>  
    <LogApplication>PACSLogApplication</LogApplication>  
    <LogModule>PACSLogModule</LogModule>  
    <LogLocation>PACSLogLocation</LogLocation>  
    <LogText>PACSLogText</LogText>  
  </LogData>  
  <LogData>  
    <LogID>2358201302021341286349538948878147093861</LogID>  
    <LogDateTime>20130202134128</LogDateTime>  
    <LogType>Error</LogType>  
    <LogFlag>PACSFlag</LogFlag>  
    <LogApplication>PACSLogApplication</LogApplication>  
    <LogModule>PACSLogModule</LogModule>  
    <LogLocation>PACSLogLocation</LogLocation>  
    <LogText>PACSLogText</LogText>  
  </LogData>      
</AppXmlLogWritter>  

获取具有 LogApplication 的节点以 'P' 和位置 <=1 和 >=2 开头

/AppXmlLogWritter/LogData[LogApplication/text()[starts-with(. , 'P')]]和LogData[position()<=1 and position()>=2]

我已经写了上面的查询但失败了

Answer 1

/AppXmlLogWritter/LogData[starts-with(LogApplication, 'P') and (position()<=1 and position()>=2)]