我正在尝试简化以下代码。它工作正常，但我想用LINQ重构它。
我只能使用2个单独的查询和两个独立的数组来解决这个问题：
var testid = xliff.Descendants()
.Elements(xmlns + "trans-unit")
.Elements(xmlns + "seg-source")
.Elements(xmlns + "mrk")
.Where(e => e.Attribute("mtype").Value == "seg").ToArray();
string[] parentids = new string[testid.Length];
int counter = 0;
foreach (var item in testid)
{
XElement testelement = item.Parent.Parent.PreviousNode as XElement;
parentids[counter] = testelement.Elements(xmlns + "source")
.Elements(xmlns + "x")
.LastOrDefault()
.Attribute("id")
.Value.ToString();
counter++;
}
更新的代码：
var parentids = xliff.Descendants()
.Elements(xmlns + "trans-unit")
.Elements(xmlns + "seg-source")
.Elements(xmlns + "mrk")
.Where(e => e.Attribute("mtype").Value == "seg")
.Select(item => (XElement)item.Parent.Parent.PreviousNode)
.Where(item => item != null)
.Select(item => item.Elements(xmlns + "source")
.Where(itema => itema != null)
.Select(itemb => itemb.Elements(xmlns + "x")
.LastOrDefault()
.Attribute("id")
.Value.ToString())).ToArray();
我想看看是否可以通过一个LINQ查询来解决这个问题。感谢。
更新：我想解析的xliff的示例部分：
以下是XML的片段，以便您了解我想要获得的内容：
<?xml version="1.0" encoding="utf-8"?>
<xliff xmlns:sdl="http://sdl.com/FileTypes/SdlXliff/1.0" version="1.2" sdl:version="1.0" xmlns="urn:oasis:names:tc:xliff:document:1.2">
<!-- xliff goes on here -->
<trans-unit id="495bbe35-ad63-4d37-91e0-8261c2e4052e" translate="no">
<source>
<x id="11" />
<x id="12" /> <!-- THIS IS THE ID I WANT TO GET PARSED -->
</source>
</trans-unit>
<trans-unit id="5bccf5f4-56c9-4969-8416-f3114eb36e86">
<source>
<x id="13" />SOME TEXT
</source>
<seg-source>
<mrk mtype="seg" mid="6"> <!-- THIS IS THE 'MID' I WANT TO START FROM -->
<x id="13" />SOME TEXT
</mrk>
</seg-source>
<target>
<mrk mtype="seg" mid="6">
<x id="13" />SOME TRANSLATION
</mrk>
</target>
<sdl:seg-defs>
<sdl:seg id="6" conf="ApprovedTranslation" origin="interactive" />
</sdl:seg-defs>
</trans-unit>
更新：
XMLtype2：
<?xml version="1.0" encoding="utf-8"?><xliff xmlns:sdl="http://sdl.com/FileTypes/SdlXliff/1.0" xmlns="urn:oasis:names:tc:xliff:document:1.2" version="1.2" sdl:version="1.0"><file original="C:\Users\talentbi\AppData\Local\Temp\88f49a09-41ef-4777-ab1e-931fed467885\4D_Kit_Intro_2015_Updates_hu_HU_20151209_153539\hu-HU\Internet_Anti-DrugIntro2015.xml_1457007.xlf" datatype="x-sdlfilterframework2" source-language="en-US" target-language="hu-HU"><body><trans-unit translate="no" id="c3a13bfb-ed51-49cf-8278-e2c86c2114c0"><source><x id="0"/></source></trans-unit><group><sdl:cxts><sdl:cxt id="1"/></sdl:cxts><trans-unit id="3b4520df-4483-4c9e-8a9b-ce2544269f3e"><source><x id="1"/>Drugs are robbing our children of their future. <x id="2"/>Every 17 seconds a teenager experiments with an illicit drug for the first time. <x id="3"/>And nearly half meet dealers right in the hallways and campuses of their schools. <x id="4"/>While at the same time prescription drug abuse has soared by 400%, <x id="5"/>exceeding heroin, cocaine and Ecstasy combined. <x id="6"/>Billions are spent on programs to reach kids, <x id="7"/>with little or no impact on teen experimentation. <x id="8"/>And all while drug-related crime and violence among young people <x id="9"/>continues to escalate, threatening their lives and the safety of their communities. <x id="10"/>But helping young people lead lives without drugs <x id="11"/>is the Foundation for a Drug-Free World, <x id="12"/>coordinating the largest non-governmental <x id="13"/>drug education and prevention campaign on Earth. <x id="14"/>Drawing on more than 25 years of experience in drug prevention, <x id="15"/>today Foundation volunteers and members of like-minded organizations <x id="16"/>conduct an international multi-media Truth About Drugs campaign. <x id="17"/>At the heart of the program is a series of high-impact educational booklets <x id="18"/>covering the most commonly abused drugs, <x id="19"/>educating youth so they can make their own decision about drugs. <x id="20"/>And as the materials are available in some 20 languages, <x id="21"/>Drug-Free World teams work everywhere – <x id="22"/>from cocaine distribution points in Southern Florida <x id="23"/>to neighborhoods overrun with meth in Southern California. <x id="24"/>From the crack streets of New York and Harlem <x id="25"/>to designer-drug routes of Australia and Asia <x id="26"/>and out to the cannabis trafficking lanes of Africa and Western Europe. <x id="27"/>Then there are the partnerships the Foundation forges everywhere else. <x id="28"/>The New York Drug-Free World formed an alliance <x id="29"/>with the New York City Department of Youth and Community Development, <x id="30"/>linking them to hundreds of schools and over a million students across New York City – <x id="31"/>from Brooklyn and the Bronx to Staten Island and Manhattan. <x id="32"/>All of which led to Drug-Free World being officially inaugurated into <x id="33"/>a New York State Senate Task Force on Prescription Drugs and Heroin – <x id="34"/>and this from the New York State Senate: <x id="35"/>“Drug-Free World has enriched our state and is worthy of the esteem of all New Yorkers.” <x id="36"/>In Indonesia, Drug-Free World Southeast Asia advances Truth About Drugs to Indonesian youth <x id="37"/>through the National Scouting Association and its membership of more than 20 million kids. <x id="38"/>Partnering with the Association’s Director for Education and Training, <x id="39"/>Drug-Free World provided 550,000 translated Truth About Drugs booklets, <x id="40"/>as well as documentaries, educator guides and lesson plans. <x id="41"/>Directly following this, more than 4,000 Senior Scout Trainers adopted Drug-Free World <x id="42"/>to simultaneously attack the plague of drug abuse in Indonesia and serve as agents of change for the nation. <x id="43"/>In Mexico City, Drug-Free World partners <x id="44"/>with the Auxiliary Security Forces for the State of Mexico, <x id="45"/>receiving more than 4,000 booklets pertaining to the principal drugs in their territory. <x id="46"/>They in turn deploy with precision, distributing literal truckloads of booklets all over the city <x id="47"/>which is how Drug-Free World infused nearly a quarter of a million booklets <x id="48"/>and thereby assisted the State of Mexico in a war against drugs. <x id="49"/>Booklet distribution is flanked by a series <x id="50"/>of award-winning public service announcements <x id="51"/>broadcast on hundreds of TV stations, <x id="52"/>totaling over 120 countries and reaching tens of millions of viewers. <x id="53"/>But the one component that distinguishes Drug-Free World <x id="54"/>from any other similarly aimed program is this one. <x id="55"/>An award-winning, full-length, hour-and-a-half documentary <x id="56"/>containing films on every drug of choice. <x id="57"/>This documentary educates and enlightens and speaks to kids in their own language. <x id="58"/>It’s told by people who know addiction firsthand and have actually “been there,” <x id="59"/>and by telling their stories they pass on what they learned <x id="60"/>so others can avoid going down the same path. <x id="61"/>Drug-Free World also provides the Truth About Drugs Education Package. <x id="62"/>It’s complete with posters, the documentary and PSAs, an educational guide, <x id="63"/>two dozen sets of the booklets – in other words, an entire curriculum <x id="64"/>with a teacher’s manual, a full semester of lesson plans, <x id="65"/>essays and homework assignments. <x id="66"/>And all of this is provided by the Foundation at no charge to educators. <x id="67"/>While to ensure the Truth About Drugs reaches everyone, <x id="68"/>there is drugfreeworld.org. <x id="69"/>When visitors arrive there, <x id="70"/>they discover the ultimate interactive drug resource center for educators, adults and kids. <x id="71"/>Here anyone can view and download the booklets, watch films and PSAs, <x id="72"/>create a virtual classroom or download the curriculum app <x id="73"/>and order resources to take the program even further. <x id="74"/>All told, it adds up to more than 72 million Truth About Drugs booklets distributed, <x id="75"/>tens of thousands of drug awareness events in 70 countries, <x id="76"/>some 2,000 alliances with other drug prevention entities, <x id="77"/>more than 17 million visits annually to the Drug-Free World website <x id="78"/>and hundreds ordering materials every week – <x id="79"/>bringing the total people reached with the Foundation’s drug-free message <x id="80"/>to more than 200 million in a single year. <x id="81"/>It <x id="82"/>is<x id="83"/> possible to reverse the trend of drug abuse in our society. <x id="84"/>The results of the Truth About Drugs program have been proven <x id="85"/>to effectively empower youth so they make the right choice. <x id="86"/>Anyone can help by supporting a Truth About Drugs program, <x id="87"/>or providing for distribution of educational materials <x id="88"/>to youth in their community or city. <x id="89"/>By joining the Foundation for a Drug-Free World’s campaign, <x id="90"/>we can help steer an entire generation away from drugs <x id="91"/>and set them on course for a drug-free future. </source><seg-source><mrk mtype="seg" mid="2"><x id="1"/>Drugs are robbing our children of their future. </mrk><mrk mtype="seg" mid="3"><x id="2"/>Every 17 seconds a teenager experiments with an illicit drug for the first time. </mrk><mrk mtype="seg" mid="4"><x id="3"/>And nearly half meet dealers right in the hallways and campuses of their schools. </mrk><mrk mtype="seg" mid="5"><x id="4"/>While at the same time prescription drug abuse has soared by 400%, <x id="5"/>exceeding heroin, cocaine and Ecstasy combined. </mrk><mrk mtype="seg" mid="6"><x id="6"/>Billions are spent on programs to reach kids, <x id="7"/>with little or no impact on teen experimentation. </mrk><mrk mtype="seg" mid="7"><x id="8"/>And all while drug-related crime and violence among young people <x id="9"/>continues to escalate, threatening their lives and the safety of their communities. </mrk><mrk mtype="seg" mid="8"><x id="10"/>But helping young people lead lives without drugs <x id="11"/>is the Foundation for a Drug-Free World, <x id="12"/>coordinating the largest non-governmental <x id="13"/>drug education and prevention campaign on Earth. </mrk><mrk mtype="seg" mid="9"><x id="14"/>Drawing on more than 25 years of experience in drug prevention, <x id="15"/>today Foundation volunteers and members of like-minded organizations <x id="16"/>conduct an international multi-media Truth About Drugs campaign. </mrk><mrk mtype="seg" mid="10"><x id="17"/>At the heart of the program is a series of high-impact educational booklets <x id="18"/>covering the most commonly abused drugs, <x id="19"/>educating youth so they can make their own decision about drugs. </mrk><mrk mtype="seg" mid="11"><x id="20"/>And as the materials are available in some 20 languages, <x id="21"/>Drug-Free World teams work everywhere – <x id="22"/>from cocaine distribution points in Southern Florida <x id="23"/>to neighborhoods overrun with meth in Southern California. </mrk><mrk mtype="seg" mid="12"><x id="24"/>From the crack streets of New York and Harlem <x id="25"/>to designer-drug routes of Australia and Asia <x id="26"/>and out to the cannabis trafficking lanes of Africa and Western Europe. </mrk><mrk mtype="seg" mid="13"><x id="27"/>Then there are the partnerships the Foundation forges everywhere else. </mrk><mrk mtype="seg" mid="14"><x id="28"/>The New York Drug-Free World formed an alliance <x id="29"/>with the New York City Department of Youth and Community Development, <x id="30"/>linking them to hundreds of schools and over a million students across New York City – <x id="31"/>from Brooklyn and the Bronx to Staten Island and Manhattan. </mrk><mrk mtype="seg" mid="15"><x id="32"/>All of which led to Drug-Free World being officially inaugurated into <x id="33"/>a New York State Senate Task Force on Prescription Drugs and Heroin – <x id="34"/>and this from the New York State Senate: <x id="35"/>“Drug-Free World has enriched our state and is worthy of the esteem of all New Yorkers.” </mrk><mrk mtype="seg" mid="16"><x id="36"/>In Indonesia, Drug-Free World Southeast Asia advances Truth About Drugs to Indonesian youth <x id="37"/>through the National Scouting Association and its membership of more than 20 million kids. </mrk><mrk mtype="seg" mid="17"><x id="38"/>Partnering with the Association’s Director for Education and Training, <x id="39"/>Drug-Free World provided 550,000 translated Truth About Drugs booklets, <x id="40"/>as well as documentaries, educator guides and lesson plans. </mrk><mrk mtype="seg" mid="18"><x id="41"/>Directly following this, more than 4,000 Senior Scout Trainers adopted Drug-Free World <x id="42"/>to simultaneously attack the plague of drug abuse in Indonesia and serve as agents of change for the nation. </mrk><mrk mtype="seg" mid="19"><x id="43"/>In Mexico City, Drug-Free World partners <x id="44"/>with the Auxiliary Security Forces for the State of Mexico, <x id="45"/>receiving more than 4,000 booklets pertaining to the principal drugs in their territory. </mrk><mrk mtype="seg" mid="20"><x id="46"/>They in turn deploy with precision, distributing literal truckloads of booklets all over the city <x id="47"/>which is how Drug-Free World infused nearly a quarter of a million booklets <x id="48"/>and thereby assisted the State of Mexico in a war against drugs. </mrk><mrk mtype="seg" mid="21"><x id="49"/>Booklet distribution is flanked by a series <x id="50"/>of award-winning public service announcements <x id="51"/>broadcast on hundreds of TV stations, <x id="52"/>totaling over 120 countries and reaching tens of millions of viewers. </mrk><mrk mtype="seg" mid="22"><x id="53"/>But the one component that distinguishes Drug-Free World <x id="54"/>from any other similarly aimed program is this one. </mrk><mrk mtype="seg" mid="23"><x id="55"/>An award-winning, full-length, hour-and-a-half documentary <x id="56"/>containing films on every drug of choice. </mrk><mrk mtype="seg" mid="24"><x id="57"/>This documentary educates and enlightens and speaks to kids in their own language. </mrk><mrk mtype="seg" mid="25"><x id="58"/>It’s told by people who know addiction firsthand and have actually “been there,” <x id="59"/>and by telling their stories they pass on what they learned <x id="60"/>so others can avoid going down the same path. </mrk><mrk mtype="seg" mid="26"><x id="61"/>Drug-Free World also provides the Truth About Drugs Education Package. </mrk><mrk mtype="seg" mid="27"><x id="62"/>It’s complete with posters, the documentary and PSAs, an educational guide, <x id="63"/>two dozen sets of the booklets – in other words, an entire curriculum <x id="64"/>with a teacher’s manual, a full semester of lesson plans, <x id="65"/>essays and homework assignments. </mrk><mrk mtype="seg" mid="28"><x id="66"/>And all of this is provided by the Foundation at no charge to educators. </mrk><mrk mtype="seg" mid="29"><x id="67"/>While to ensure the Truth About Drugs reaches everyone, <x id="68"/>there is drugfreeworld.org. </mrk><mrk mtype="seg" mid="30"><x id="69"/>When visitors arrive there, <x id="70"/>they discover the ultimate interactive drug resource center for educators, adults and kids. </mrk><mrk mtype="seg" mid="31"><x id="71"/>Here anyone can view and download the booklets, watch films and PSAs, <x id="72"/>create a virtual classroom or download the curriculum app <x id="73"/>and order resources to take the program even further. </mrk><mrk mtype="seg" mid="32"><x id="74"/>All told, it adds up to more than 72 million Truth About Drugs booklets distributed, <x id="75"/>tens of thousands of drug awareness events in 70 countries, <x id="76"/>some 2,000 alliances with other drug prevention entities, <x id="77"/>more than 17 million visits annually to the Drug-Free World website <x id="78"/>and hundreds ordering materials every week – <x id="79"/>bringing the total people reached with the Foundation’s drug-free message <x id="80"/>to more than 200 million in a single year. </mrk><mrk mtype="seg" mid="33"><x id="81"/>It <x id="82"/>is<x id="83"/> possible to reverse the trend of drug abuse in our society. </mrk><mrk mtype="seg" mid="34"><x id="84"/>The results of the Truth About Drugs program have been proven <x id="85"/>to effectively empower youth so they make the right choice. </mrk><mrk mtype="seg" mid="35"><x id="86"/>Anyone can help by supporting a Truth About Drugs program, <x id="87"/>or providing for distribution of educational materials <x id="88"/>to youth in their community or city. </mrk><mrk mtype="seg" mid="36"><x id="89"/>By joining the Foundation for a Drug-Free World’s campaign, <x id="90"/>we can help steer an entire generation away from drugs <x id="91"/>and set them on course for a drug-free future. </mrk></seg-source><target></target></trans-unit></group><trans-unit translate="no" id="7890462c-edcb-4fe6-9192-033ba76d9942"><source><x id="183"/></source></trans-unit></body></file></xliff>
答案 0 :(得分：1)
像这样的东西
string[] parentids = xliff.Descendants()
.Elements(xmlns + "trans-unit")
.Elements(xmlns + "seg-source")
.Elements(xmlns + "mrk")
.Where(e => e.Attribute("mtype").Value == "seg")
.Select(item => (XElement)item.Parent.Parent.PreviousNode)
.Where(item => item != null)
.Select(item => item.Elements(xmlns + "source")
.Elements(xmlns + "x")
.LastOrDefault()
.Attribute("id")
.Value.ToString()).ToArray();
答案 1 :(得分：0)
您可以尝试这种方式：
var parentids = xliff.Descendants()
.Elements(xmlns + "trans-unit")
.Where(o => o.Elements(xmlns + "seg-source")
.Elements(xmlns + "mrk")
.Any(e => (string)e.Attribute("mtype") == "seg"))
.Select(o => (XElement)o.PreviousNode)
.Elements(xmlns + "source")
.Elements(xmlns + "x")
.Select(o => (string)o.Attribute("id"));
答案 2 :(得分：0)
我不喜欢以前的，真的很难看。试试这个你没有得到任何空值的地方。
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Xml;
using System.Xml.Linq;
namespace ConsoleApplication1
{
class Program
{
const string FILENAME = @"c:\temp\test.xml";
static void Main(string[] args)
{
XDocument doc = XDocument.Load(FILENAME);
XElement xliff = (XElement)doc.FirstNode;
XNamespace ns = xliff.Name.Namespace;
var testid = xliff.Descendants(ns + "trans-unit").Where((x, i) => (i % 2) == 0).Select(y => new {
x = y.Descendants(ns + "x")
.Select(z => z.Attribute("id").Value)
.Last()
}).ToList();
}
}
}