Question

Hi I am writing an app for a medical study they will type in the gender, the age, and some other values which will be calculated to a ResultValue

now I have an XML file which holds some information about the result in combination of Age, Gender and the ResultValues and I would like to print out the description of the TestResult (in case in which group the proband belong) One thing to note is that I have to deal with value ranges this means the actual value lies between the low part and the high part… I have three groups… OK hier is my XML file

<?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> 

What would look my linq to xml query like if I have

gender=’female’

age=29

ResultValue=17

this proband would certainly belong to Group 1 and I would like to print out the matching Description…

But I am banging my head to get this working…

I am looking for a solution in c#… Any help would be great!!!

Answer 1

Something like this?

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); 

The idea is that you can imagine a row-column shape where each row is a ResultValue. Each result value has a single parent of Age, a single parent of Gender, an a single parent of Result.

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

In fact, one can project the above xml into that shape:

        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);