本文介绍了获取元素的伯爵那里的候选人赢得了的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
LINQ2Xml：我想获得元素，其中的候选人赢得了在每个省的数量。我需要一些帮助。
＆LT; Pronvice_Data＆GT;
＆LT; Pronvice＆GT; PronviceA＆LT; / Pronvice＆GT;
＆LT; Registered_Voters＆GT; 115852＆LT; / Registered_Voters＆GT;
＆其中; Sam_Kea＆GT; 100℃/ Sam_Kea＆GT;
＆其中;杰杰奥＆GT; 500℃; /杰杰奥＆GT;
＆其中; john_doe即＆GT; 400℃/ john_doe即＆GT;
＆LT; / Pronvice_Data＆GT;
＆LT; Pronvice_Data＆GT;
＆LT; Pronvice＆GT; PronviceA＆LT; / Pronvice＆GT;
＆LT; Registered_Voters＆GT; 25852＆LT; / Registered_Voters＆GT;
＆其中; Sam_Kea＆GT; 200℃/ Sam_Kea＆GT;
＆其中;杰杰奥＆GT; 100℃/杰杰奥＆GT;
＆其中; john_doe即大于300＆所述; / john_doe即＆GT;
＆LT; / Pronvice_Data＆GT;
＆LT; Pronvice_Data＆GT;
＆LT; Pronvice＆GT; PronviceC＆LT; / Pronvice＆GT;
＆LT; Registered_Voters＆GT; 317684＆LT; / Registered_Voters＆GT;
＆其中; Sam_Kea＆GT; 1000℃; / Sam_Kea＆GT;
＆LT;杰杰奥＆GT; 1200 LT; /杰杰奥＆GT;
＆其中; john_doe即＆GT; 190℃; / john_doe即＆GT;
＆LT; / Pronvice_Data＆GT;
预期成果：
候选人|赢得
杰杰奥2
john_doe即1
Sam_Kea 0
解决方案
OK，我不喜欢的数据格式，所以我改成了这样：
＆LT;根＆GT;
＆LT;考生＆GT;
＆LT; Sam_Kea /＆GT;
＆LT;杰杰奥/＆GT;
＆LT; john_doe即/＆GT;
＆LT; /考生＆GT;
＆LT;各省＆GT;
＆LT;省名='ProvinceA'Registered_Voters ='115852'＆GT;
＆LT;考生姓名='Sam_Kea的投票=100/＆GT;
＆LT;考生姓名='杰杰奥的投票='500'/＆GT;
＆LT;考生姓名='john_doe即'票=400/＆GT;
＆LT; /省＆GT;
＆LT;省名='ProvinceB'Registered_Voters ='25852'＆GT;
＆LT;考生姓名='Sam_Kea的投票=200/＆GT;
＆LT;考生姓名='杰杰奥的投票=100/＆GT;
＆LT;考生姓名='john_doe即'票=300/＆GT;
＆LT; /省＆GT;
＆LT;省名='ProvinceC'Registered_Voters ='317684'＆GT;
＆LT;考生姓名='Sam_Kea的投票=1000/＆GT;
＆LT;考生姓名='杰杰奥的投票=1200/＆GT;
＆LT;考生姓名='john_doe即'票='190'/＆GT;
＆LT; /省＆GT;
＆LT; /省＆GT;
＆LT; /根＆GT;
这是LINQ到XML code我用：
公共无效的run（）
{
字符串fileToLoad = this.GetType（）名+的.xml。
的XElement根= XElement.Load（fileToLoad）;
// ================================================ =======
的System.Console.WriteLine（\ nCandidates：）;
在root.Element（申请人）VAR allCandidates =从C。元素（）
选择c.Name;
的foreach（VAR d在allCandidates）
Console.WriteLine（{0}，d.ToString（））;
// ================================================ =======
的System.Console.WriteLine（在每个省考生的\ n已接收：）;
VAR S1 =从p在root.Element（省）。元素（）
选择新
{
箴=（字符串）p.Attribute（姓名），
NumCandidates = p.Elements（候选人）。COUNT（）
};
的foreach（VAR d在S1）
Console.WriteLine（{0}，d.ToString（））;
// ================================================ =======
的System.Console.WriteLine（\ nCandidate与多数选票：）;
VAR S2 =从p在root.Element（省）。元素（）
让maxVotes =（从C在p.Elements（候选人）选择C）
的.max（X =＆GT;（（INT）x.Attribute（内容）））
选择新
{
箴=（字符串）p.Attribute（姓名），
选民=（INT）p.Attribute（Registered_Voters），
候选=（从C在p.Elements（候选人）
选择C）。凡（X =＆GT;（（INT）x.Attribute（内容））== maxVotes）
。首先（）。属性（名称）。值
};
的foreach（VAR d在S2）
Console.WriteLine（{0}，d.ToString（））;
// ================================================ =======
的System.Console.WriteLine（\ nCandidates和省＃荣获：）;
VAR S4 =从能在allCandidates
让数=（从对在S2，其中p.Candidate ==可以选择P）.Count之间的（）
排序依据计数下降
选择新{候选人=可以，NumberOfProvincesWon =计数};
的foreach（VAR d在S4）
Console.WriteLine（{0}，d.ToString（））;
}
输出：
考生：
Sam_Kea
杰杰奥
john_doe即
在每个省考生数：
{箴= ProvinceA，NumCandidates = 3}
{箴= ProvinceB，NumCandidates = 3}
{箴= ProvinceC，NumCandidates = 3}
与候选人得票最多：
{箴= ProvinceA，投票人= 115852，候选人=杰杰奥}
{箴= ProvinceB，投票人= 25852，候选人= john_doe即}
{箴= ProvinceC，投票人= 317684，候选人=杰杰奥}
考生和省＃荣获：
{候选人=杰杰奥，NumberOfProvincesWon = 2}
{候选人= john_doe即NumberOfProvincesWon = 1}
{候选人= Sam_Kea，NumberOfProvincesWon = 0}
LINQ2Xml:I would like to get the count of elements where candidate has won in every province. I need some help.
<Pronvice_Data>
<Pronvice>PronviceA</Pronvice>
<Registered_Voters>115852</Registered_Voters>
<Sam_Kea>100</Sam_Kea>
<Jeje>500</Jeje>
<John_Doe>400</John_Doe>
</Pronvice_Data>
<Pronvice_Data>
<Pronvice>PronviceA</Pronvice>
<Registered_Voters>25852</Registered_Voters>
<Sam_Kea>200</Sam_Kea>
<Jeje>100</Jeje>
<John_Doe>300</John_Doe>
</Pronvice_Data>
<Pronvice_Data>
<Pronvice>PronviceC</Pronvice>
<Registered_Voters>317684</Registered_Voters>
<Sam_Kea>1000</Sam_Kea>
<Jeje>1200</Jeje>
<John_Doe>190</John_Doe>
</Pronvice_Data>
Expected Result:
Candidate | Won In
Jeje 2
John_Doe 1
Sam_Kea 0
解决方案
OK, I didn't like the data format, so I changed it to this:
<root>
<Candidates>
<Sam_Kea/>
<Jeje/>
<John_Doe/>
</Candidates>
<Provinces>
<Province name='ProvinceA' Registered_Voters='115852'>
<Candidate name='Sam_Kea' votes='100'/>
<Candidate name='Jeje' votes='500'/>
<Candidate name='John_Doe' votes='400'/>
</Province>
<Province name='ProvinceB' Registered_Voters='25852'>
<Candidate name='Sam_Kea' votes='200'/>
<Candidate name='Jeje' votes='100'/>
<Candidate name='John_Doe' votes='300'/>
</Province>
<Province name='ProvinceC' Registered_Voters='317684'>
<Candidate name='Sam_Kea' votes='1000'/>
<Candidate name='Jeje' votes='1200'/>
<Candidate name='John_Doe' votes='190'/>
</Province>
</Provinces>
</root>
And this is the LINQ-to-XML code I used:
public void Run()
{
string fileToLoad = this.GetType().Name + ".xml";
XElement root = XElement.Load(fileToLoad);
// =======================================================
System.Console.WriteLine("\nCandidates:");
var allCandidates = from c in root.Element("Candidates").Elements()
select c.Name;
foreach (var d in allCandidates)
Console.WriteLine(" {0}", d.ToString());
// =======================================================
System.Console.WriteLine("\nNumber of Candidates in each Province:");
var s1 = from p in root.Element("Provinces").Elements()
select new
{
Prov = (string) p.Attribute("name"),
NumCandidates = p.Elements("Candidate").Count()
};
foreach (var d in s1)
Console.WriteLine(" {0}", d.ToString());
// =======================================================
System.Console.WriteLine("\nCandidate with most votes:");
var s2 = from p in root.Element("Provinces").Elements()
let maxVotes = (from c in p.Elements("Candidate") select c)
.Max(x => ((int)x.Attribute("votes")))
select new
{
Prov = (string) p.Attribute("name"),
Voters = (int) p.Attribute("Registered_Voters"),
Candidate = (from c in p.Elements("Candidate")
select c).Where(x => ((int)x.Attribute("votes")) == maxVotes)
.First().Attribute("name").Value
};
foreach (var d in s2)
Console.WriteLine(" {0}", d.ToString());
// =======================================================
System.Console.WriteLine("\nCandidates and the # of provinces won:");
var s4 = from can in allCandidates
let count = (from p in s2 where p.Candidate == can select p).Count()
orderby count descending
select new { Candidate = can, NumberOfProvincesWon = count };
foreach (var d in s4)
Console.WriteLine(" {0}", d.ToString());
}
Output:
Candidates:
Sam_Kea
Jeje
John_Doe
Number of Candidates in each Province:
{ Prov = ProvinceA, NumCandidates = 3 }
{ Prov = ProvinceB, NumCandidates = 3 }
{ Prov = ProvinceC, NumCandidates = 3 }
Candidate with most votes:
{ Prov = ProvinceA, Voters = 115852, Candidate = Jeje }
{ Prov = ProvinceB, Voters = 25852, Candidate = John_Doe }
{ Prov = ProvinceC, Voters = 317684, Candidate = Jeje }
Candidates and the # of provinces won:
{ Candidate = Jeje, NumberOfProvincesWon = 2 }
{ Candidate = John_Doe, NumberOfProvincesWon = 1 }
{ Candidate = Sam_Kea, NumberOfProvincesWon = 0 }
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