如何编写这个嵌套的Linq To Xml查询

Question

嗨，我正在为医学研究编写一个应用程序，他们将输入性别，年龄和一些其他值，这些值将计算到ResultValue

现在我有一个XML文件，其中包含Age，Gender和ResultValues组合结果的一些信息，我想打印出TestResult的描述（如果先证者属于哪个组）需要注意的一件事是我必须处理值范围这意味着实际值位于低部分和高部分之间...我有三个组...好的hier是我的XML文件

<?xml version="1.0" encoding="iso-8859-1"?>
 <Result>
        <ID>1</ID>
        <Description>You belong to Group 1</Description>
        <Genders>
            <Gender type="female">
                <Ages>
                    <Age low="18" high="24">
                        <ResultValue low="0" high="19"/>
                    </Age>
                    <Age low="25" high="34">
                        <ResultValue low="0" high="20"/>
                    </Age>
                    <Age low="35" high="44">
                        <ResultValue low="0" high="21"/>
                    </Age>
                    <Age low="45" high="54">
                        <ResultValue low="0" high="22"/>
                    </Age>
                    <Age low="55" high="64">
                        <ResultValue low="0" high="23"/>
                    </Age>
                    <Age low="65" high="110">
                        <ResultValue low="0" high="24"/>
                    </Age>
                </Ages>
            </Gender>
            <Gender type="male">
                <Ages>
                    <Age low="18" high="24">
                        <ResultValue low="0" high="19"/>
                    </Age>
                    <Age low="25" high="34">
                        <ResultValue low="0" high="20"/>
                    </Age>
                    <Age low="35" high="44">
                        <ResultValue low="0" high="21"/>
                    </Age>
                    <Age low="45" high="54">
                        <ResultValue low="0" high="22"/>
                    </Age>
                    <Age low="55" high="64">
                        <ResultValue low="0" high="23"/>
                    </Age>
                    <Age low="65" high="110">
                        <ResultValue low="0" high="24"/>
                    </Age>
                </Ages>
            </Gender>
        </Genders>
    </Result>
    <Result>
        <ID>2</ID>
        <Description>You belong to Group 2</Description>
        <Genders>
            <Gender type="female">
                <Ages>
                    <Age low="18" high="24">
                        <ResultValue low="19" high="24"/>
                    </Age>
                    <Age low="25" high="34">
                        <ResultValue low="20" high="25"/>

                    </Age>
                    <Age low="35" high="44">
                        <ResultValue low="21" high="26"/>
                    </Age>
                    <Age low="45" high="54">
                        <ResultValue low="22" high="27"/>
                    </Age>
                    <Age low="55" high="64">
                        <ResultValue low="23" high="28"/>
                    </Age>
                    <Age low="65" high="110">
                        <ResultValue low="24" high="29"/>
                    </Age>
                </Ages>
            </Gender>
            <Gender type="male">
                <Ages>
                    <Age low="18" high="24">
                        <ResultValue low="19" high="24"/>
                    </Age>
                    <Age low="25" high="34">
                        <ResultValue low="20" high="25"/>
                    </Age>
                    <Age low="35" high="44">
                        <ResultValue low="21" high="26"/>
                    </Age>
                    <Age low="45" high="54">
                        <ResultValue low="22" high="27"/>
                    </Age>
                    <Age low="55" high="64">
                        <ResultValue low="23" high="28"/>
                    </Age>
                    <Age low="65" high="110">
                        <ResultValue low="24" high="29"/>
                    </Age>
                </Ages>
            </Gender>
        </Genders>
    </Result>
    <Result>
        <ID>3</ID>
        <Description>You belong to group 3</Description>
        <Genders>
            <Gender type="female">
                <Ages>
                    <Age low="18" high="24">
                        <ResultValue low="24" high="29"/>
                    </Age>
                    <Age low="25" high="34">
                        <ResultValue low="25" high="30"/>

                    </Age>
                    <Age low="35" high="44">
                        <ResultValue low="26" high="31"/>
                    </Age>
                    <Age low="45" high="54">
                        <ResultValue low="27" high="32"/>
                    </Age>
                    <Age low="55" high="64">
                        <ResultValue low="28" high="33"/>
                    </Age>
                    <Age low="65" high="110">
                        <ResultValue low="29" high="34"/>
                    </Age>
                </Ages>
            </Gender>
            <Gender type="male">
                <Ages>
                    <Age low="18" high="24">
                        <ResultValue low="24" high="29"/>
                    </Age>
                    <Age low="25" high="34">
                        <ResultValue low="25" high="30"/>
                    </Age>
                    <Age low="35" high="44">
                        <ResultValue low="26" high="31"/>
                    </Age>
                    <Age low="45" high="54">
                        <ResultValue low="27" high="32"/>
                    </Age>
                    <Age low="55" high="64">
                        <ResultValue low="28" high="33"/>
                    </Age>
                    <Age low="65" high="110">
                        <ResultValue low="29" high="34"/>
                    </Age>
                </Ages>
            </Gender>
        </Genders>   
    </Result>

什么看起来我的linq到xml查询，如果我有

性别=“女”

年龄= 29

ResultValue = 17

这个先证者肯定属于第1组，我想打印出匹配的描述......

但我正在敲打我的头来让这个工作......

我正在寻找c＃的解决方案...任何帮助都会很棒!!!

Answer 1

像这样的东西？

XElement myElement = XElement.Parse(xmlstring);

int resultValue = 17;
int age = 26;
string genderValue = "female";

IEnumerable<string> query =
    myElement.Descendants("ResultValue")
        .Where(rv => ((int)rv.Attribute("low")) <= resultValue)
        .Where(rv => ((int)rv.Attribute("high")) >= resultValue)
        .Where(rv => rv.Ancestors("Age")
            .Any(a => ((int) a.Attribute("low")) <= age && ((int) a.Attribute("high")) >= age)
        )
       .Where(rv => ((string)rv.Ancestors("Gender").Single().Attribute("type")) == genderValue)
       .Select(rv => rv.Ancestors("Result").Single().Element("Description").Value);

    foreach (string x in query)
        Console.WriteLine(x);

这个想法是你可以想象一个行列形状，其中每一行都是ResultValue。 每个结果值都有一个Age的父级，Gender的单个父级，Result的单个父级。

ResultValue.Low ResultValue.High Age.Low Age.High Gender.Type Result.Description

实际上，可以将上面的xml投影到该形状中：

        var query2 = myElement.Descendants("ResultValue")
            .Select(rv => new 
            {
                ResultValue = rv,
                Age = rv.Ancestors("Age"),
                Gender = rv.Ancestors("Gender"),
                Result = rv.Ancestors("Result")
            })
            .Select(x => new XElement("Data",
            new XAttribute("ResultValue.Low", (int)x.ResultValue.Attribute("low")),
            new XAttribute("ResultValue.High", (int)x.ResultValue.Attribute("high")),
            new XAttribute("Age.Low", (int)x.Age.Attributes("low").Single()),
            new XAttribute("Age.High", (int)x.Age.Attributes("high").Single()),
            new XAttribute("Gender.Type", (string) x.Gender.Attributes("type").Single()),
            new XAttribute("Result.Description", (string) x.Result.Elements("Description").Single())
            ));
        foreach (XElement x in query2)
            Console.WriteLine(x);