文件解析与条件,显示在屏幕上

时间:2011-09-20 12:33:33

标签: c# xml linq-to-xml xml-parsing

我的代码目前正在构建,没有任何错误。它在xml文件中搜索值,我需要它来检查值是否在确定它们是否通过的范围内。我相信我的代码是正确的,但我需要通过/不能在屏幕上显示。有什么帮助吗?

var query = from file in fileEntries
                        let doc = XDocument.Load(file)
                        let x = doc.Descendants("XAxisCalib").Single()
                        let y = doc.Descendants("YAxisCalib").Single()
                        let z = doc.Descendants("ZAxisCalib").Single()
                        select new 
                       {

                            XMax = x.Element("Max").Value,
                            XMin = x.Element("Min").Value,
                            YMax = y.Element("Max").Value,
                            YMin = y.Element("Min").Value,
                            ZMax = z.Element("Max").Value,
                            ZMin = z.Element("Min").Value
                        };

            var results = from item in query
                          select new
                          {
                              XMaxResult = Convert.ToInt32(item.XMax) < 290 ? "pass" : "fail",
                              XMinResult = Convert.ToInt32(item.XMin) > -50 ? "pass" : "fail",
                              YMaxResult = Convert.ToInt32(item.YMax) < 645 ? "pass" : "fail",
                              YMinResult = Convert.ToInt32(item.YMin) > -87 ? "pass" : "fail",
                              ZMaxResult = Convert.ToInt32(item.ZMax) < 20 ? "pass" : "fail",
                              ZMinResult = Convert.ToInt32(item.ZMin) > -130 ? "pass" : "fail",

                          }; 

示例Xml :(更多行但为简单起见而删除)

 <XAxisCalib>
      <Max>296</Max>
      <Min>-51.04</Min>
    </XAxisCalib>
    <YAxisCalib>
      <Max>640</Max>
      <Min>-24.6</Min>
    </YAxisCalib>
    <ZAxisCalib>
      <Max>29.67</Max>
      <Min>-129</Min>

1 个答案:

答案 0 :(得分:2)

我有点不清楚你在问什么,但你可以这样做吗?

foreach (var result in results)
{
    Console.WriteLine("XMaxResult = {0}", result.XMaxResult );
    Console.WriteLine("XMinResult = {0}", result.XMinResult );
    Console.WriteLine("YMaxResult = {0}", result.YMaxResult );
    Console.WriteLine("YMinResult = {0}", result.YMinResult );
    Console.WriteLine("ZMaxResult = {0}", result.ZMaxResult );
    Console.WriteLine("ZMinResult = {0}", result.ZMinResult );
}

更新:如果问题是您无法将值解析为整数,则需要添加一些错误处理。您的要求可能有所不同,但作为示例,您可以尝试这样的简单方法:

    private static double TryParseWithDefault(string input, double defaultValue)
    {
        double result;
        if (!double.TryParse(input, out result))
            return defaultValue;
        return result;
    }

如果输入是非数字的,那么至少不会崩溃。然后而不是

        Convert.ToInt32(item.XMax)

尝试使用

        TryParseWithDefault(item.XMax, double.NaN)