How to write this nested Linq To Xml query?

XElement myElement = XElement. Parse(xmlstring); int resultValue = 17; int age = 26; string genderValue = "female"; IEnumerable query = myElement. Descendants("ResultValue") .

Where(rv => ((int)rv. Attribute("low")) ((int)rv. Attribute("high")) >= resultValue) .

Where(rv => rv. Ancestors("Age") . Any(a => ((int) a.

Attribute("low")) = 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. Low Age.

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. (int)x.ResultValue. Attribute("high")), new XAttribute("Age.

Low", (int)x.Age. Attributes("low").Single()), new XAttribute("Age.(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).

XElement myElement = XElement. Parse(xmlstring); int resultValue = 17; int age = 26; string genderValue = "female"; IEnumerable query = myElement. Descendants("ResultValue") .

Where(rv => ((int)rv. Attribute("low")) ((int)rv. Attribute("high")) >= resultValue) .

Where(rv => rv. Ancestors("Age") . Any(a => ((int) a.

Attribute("low")) = 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.

Low Age. 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.(int)x.ResultValue. Attribute("high")), new XAttribute("Age.

Low", (int)x.Age. Attributes("low").Single()), new XAttribute("Age.(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).

Thanks alot for your help! – Felix Jan 9 '09 at 14:43.

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