xml - vb .NET での XML の読み取りと解析

Question

<?xml version="1.0" encoding="UTF-8" standalone="no" ?>
<HorseRacingCard>
  <Meeting status="Dormant" id="51894" country="South Africa" course="Vaal" date="20121101">
    <DrawAdvantage>Outside draws hold an advantage on the straight course.</DrawAdvantage>
    <AdvancedGoing>Good</AdvancedGoing>
    <Race trifecta="No" id="433065" date="20121101" time="1010+0000" raceType="Flat" trackType="Turf" handicap="No" class="" showcase="No" maxRunners="16">
      <Title>Save The Date Sansui Summer Cup 1 December Maiden Plate</Title>
      <AddedMoney currency="ZAR" amount="74996"/>
      <PenaltyValue currency="ZAR" amount="51622"/>
      <Prizes currency="ZAR">
        <Prize position="1" amount="51622"/>
        <Prize position="2" amount="14833"/>
        <Prize position="3" amount="7410"/>
      </Prizes>
      <Eligibility type="3YO plus"/>
      <Distance units="yards" value="1094" text="0m 4f 214y"/>
      <LastWinner year="2011" noRace="No corresponding race"/>
      <Horse id="1515186" name="Magic Of Rome" bred="SAF">
    <Cloth number="1"/>
    <Drawn stall="8"/>
    <FormFigures figures="598793" type="FlatSix"/>
    <LastRunDays type="Flat" days="21"/>
    <Age years="5"/>
    <Weight text="9 6" units="pounds" value="132"/>
    <Trainer id="41207" name="Chris Erasmus" nationality="SAF"/>
    <Owner name="Messrs Werner Kuhn &amp; Tjaart Strydom"/>
    <Jockey id="82671" name="J V'd Merwe"/>
    <JockeyColours filename="20121101vaa101001.png" description="Yellow, purple epaulettes, armbands and cuffs, checked cap"/>
    <Tackle type="Blinkers" count="21"/>
    <Colour type="b"/>
    <Sex type="g"/>
    <Breeding type="Sire" name="Caesour" bred="USA" yearBorn="1990"/><Breeding type="Dam" name="Magic Filly" bred="AUS"/><Breeding type="DamSire" name="Bletchley Park" bred="IRE" yearBorn="1989"/>
    <FoalDate date="20070815"/>
    <ForecastPrice>
      <Price numerator="14" denominator="1"/>
      </ForecastPrice>
  </Horse>
      <Horse id="1632709" name="Enblazoned Star" bred="SAF">
    <Cloth number="2"/>
    <Drawn stall="9"/>
    <FormFigures figures="306740" type="FlatSix"/>
    <LastRunDays type="Flat" days="51"/>
    <Age years="4"/>
    <Weight text="9 6" units="pounds" value="132"/>
    <Trainer id="41348" name="Leon Erasmus" nationality="SAF"/>
    <Owner name="Mr L J &amp; Mrs M J Erasmus"/>
    <Jockey id="1144567" name="Wesley Marwing"><Allowance units="pounds" value="9"/></Jockey>
    <JockeyColours filename="20121101vaa101002.png" description="Red, blue epaulettes and sleeves, red cap"/>
    <Tackle type="Blinkers" count="14"/>
    <Colour type="ch"/>
    <Sex type="g"/>
    <Breeding type="Sire" name="Bezrin" bred="USA" yearBorn="1999"/><Breeding type="Dam" name="Starbright" bred="SAF" yearBorn="1995"/><Breeding type="DamSire" name="Fluorescent Light" bred="USA"/>
    <FoalDate date="20080926"/>
    <ForecastPrice>
      <Price numerator="14" denominator="1"/>
      </ForecastPrice>
  </Horse>
      <Horse id="1736936" name="Mboweni" bred="SAF">
    <Cloth number="3"/>
    <Drawn stall="14"/>
    <FormFigures figures="742234" type="FlatSix"/>
    <LastRunDays type="Flat" days="21"/>
    <RaceHistoryStat type="BeatenFavourite" value="2"/>
    <Age years="3"/>
    <Weight text="9 4" units="pounds" value="130"/>
    <Trainer id="41348" name="Leon Erasmus" nationality="SAF"/>
    <Owner name="Mr F D A Menezes"/>
    <Jockey id="21795" name="G Lerena"/>
    <JockeyColours filename="20121101vaa101003.png" description="White, black and orange striped sleeves, orange cap"/>
    <Colour type="b"/>
    <Sex type="c"/>
    <Breeding type="Sire" name="Lecture" bred="USA" yearBorn="1996"/><Breeding type="Dam" name="Ad Valorem" bred="SAF" yearBorn="2000"/><Breeding type="DamSire" name="Caesour" bred="USA" yearBorn="1990"/>
    <FoalDate date="20090907"/>
    <ForecastPrice>
      <Price numerator="3" denominator="1"/>
      </ForecastPrice>
  </Horse>
      <Horse id="1774005" name="Make My Majesty" bred="SAF">
    <Cloth number="4"/>
    <Drawn stall="4"/>
    <FormFigures figures="878755" type="FlatSix"/>
    <LastRunDays type="Flat" days="5"/>
    <Age years="3"/>
    <Weight text="9 4" units="pounds" value="130"/>
    <Trainer id="45437" name="Romeo Francis"/>
    <Owner name="Mr R Francis"/>
    <Jockey id="60482" name="Derreck David"/>
    <JockeyColours filename="20121101vaa101004.png" description="Red, black chevrons and sleeves, red armbands and cap"/>
    <Tackle type="Blinkers" count="5"/>
    <Colour type="b"/>
    <Sex type="c"/>
    <Breeding type="Sire" name="The Sheik" bred="SAF" yearBorn="1996"/><Breeding type="Dam" name="Mamzelle Magique" bred="SAF" yearBorn="1999"/><Breeding type="DamSire" name="Badger Land" bred="USA"/>
    <FoalDate date="20091102"/>
    <ForecastPrice>
      <Price numerator="14" denominator="1"/>
      </ForecastPrice>
  </Horse>
      <Horse id="1806596" name="All The Ones" bred="SAF">
    <Cloth number="5"/>
    <Drawn stall="12"/>
    <FormFigures figures="54" type="FlatSix"/>
    <LastRunDays type="Flat" days="5"/>
    <Age years="3"/>
    <Weight text="9 4" units="pounds" value="130"/>
    <Trainer id="41151" name="Paul Matchett"/>
    <Owner name="Messrs P J Magee &amp; J J Van Niekerk"/>
    <Jockey id="28125" name="R Simons"/>
    <JockeyColours filename="20121101vaa101005.png" description="Red, silver stars"/>
    <Colour type="b"/>
    <Sex type="g"/>
    <Breeding type="Sire" name="Carpocrates" bred="USA" yearBorn="2003"/><Breeding type="Dam" name="Kal Sufi" bred="SAF"/><Breeding type="DamSire" name="Al Mufti" bred="USA" yearBorn="1985"/>
    <FoalDate date="20091111"/>
    <ForecastPrice>
      <Price numerator="4" denominator="1"/>
      </ForecastPrice>
  </Horse>
      <Horse id="1819715" name="Dis'llbetheday" bred="SAF">
    <Cloth number="6"/>
    <Drawn stall="7"/>
    <FormFigures figures="" type="FlatSix"/>
    <Age years="3"/>
    <Weight text="9 4" units="pounds" value="130"/>
    <Trainer id="41149" name="Roy Magner"/>
    <Owner name="Mr &amp; Mrs E Prinsloo &amp; Messes A T &amp; E T Joseph &amp; Me"/>
    <Jockey id="30057" name="G Wrogemann"/>
    <JockeyColours filename="20121101vaa101006.png" description="Oyster grey, claret collar, cuffs and cap"/>
    <Colour type="b"/>
    <Sex type="g"/>
    <Breeding type="Sire" name="Daylami" bred="IRE" yearBorn="1994"/><Breeding type="Dam" name="World Premiere" bred="SAF" yearBorn="1996"/><Breeding type="DamSire" name="Model Man" bred="SAF"/>
    <FoalDate date="20091111"/>
    <ForecastPrice>
      <Price numerator="20" denominator="1"/>
      </ForecastPrice>
  </Horse>
      <Horse id="1819716" name="Inews" bred="SAF">
    <Cloth number="7"/>
    <Drawn stall="11"/>
    <FormFigures figures="" type="FlatSix"/>
    <Age years="3"/>
    <Weight text="9 4" units="pounds" value="130"/>
    <Trainer id="41207" name="Chris Erasmus" nationality="SAF"/>
    <Owner name="Messrs Werner Kuhn &amp; Tjaart Strydom"/>
    <Jockey id="22000" name="S Veale"/>
    <JockeyColours filename="20121101vaa101007.png" description="Yellow, purple epaulettes, armbands and cuffs, checked cap"/>
    <Colour type="b"/>
    <Sex type="c"/>
    <Breeding type="Sire" name="Winter Romance" bred="UK" yearBorn="1993"/><Breeding type="Dam" name="Readallaboutit" bred="SAF"/><Breeding type="DamSire" name="Gallic League" bred="IRE"/>
    <FoalDate date="20090915"/>
    <ForecastPrice>
      <Price numerator="20" denominator="1"/>
      </ForecastPrice>
  </Horse>
      <Horse id="1819717" name="Magic Lad" bred="SAF">
    <Cloth number="8"/>
    <Drawn stall="10"/>
    <FormFigures figures="" type="FlatSix"/>
    <Age years="3"/>
    <Weight text="9 4" units="pounds" value="130"/>
    <Trainer id="100130" name="Stanley M Ferreira"/>
    <Owner name="Mr M J Nunes"/>
    <Jockey id="28344" name="Menno Malherbe"/>
    <JockeyColours filename="20121101vaa101008.png" description="Black, white maltese cross, black and white striped sleeves and cap"/>
    <Colour type="ch"/>
    <Sex type="c"/>
    <Breeding type="Sire" name="Jallad" bred="USA" yearBorn="1988"/><Breeding type="Dam" name="Magic Filly" bred="AUS"/><Breeding type="DamSire" name="Bletchley Park" bred="IRE" yearBorn="1989"/>
    <FoalDate date="20090921"/>
    <ForecastPrice>
      <Price numerator="10" denominator="1"/>
      </ForecastPrice>
  </Horse>
      <Horse id="1819718" name="Menacing" bred="SAF">
    <Cloth number="9"/>
    <Drawn stall="2"/>
    <FormFigures figures="" type="FlatSix"/>
    <Age years="3"/>
    <Weight text="9 4" units="pounds" value="130"/>
    <Trainer id="55813" name="Michael Nicholas Houdalakis" nationality="SAF"/>
    <Owner name="Mr Colin Bird"/>
    <Jockey id="28018" name="C Maujean"/>
    <JockeyColours filename="20121101vaa101009.png" description="Black, red chevron, black sleeves, red cap"/>
    <Colour type="ch"/>
    <Sex type="g"/>
    <Breeding type="Sire" name="Go Deputy" bred="USA" yearBorn="2000"/><Breeding type="Dam" name="Fearsome" bred="SAF" yearBorn="1997"/><Breeding type="DamSire" name="Centenary" bred="USA"/>
    <FoalDate date="20090906"/>
    <ForecastPrice>
      <Price numerator="14" denominator="1"/>
      </ForecastPrice>        
  </Horse>
    </Race>
    <Race trifecta="No" id="433066" date="20121101" time="1045+0000" raceType="Flat" trackType="Turf" handicap="No" class="" showcase="No" maxRunners="16">
      <Title>All To Come Maiden Plate (F &amp; M)</Title>
      <AddedMoney currency="ZAR" amount="74996"/>
      <PenaltyValue currency="ZAR" amount="51622"/>
      <Prizes currency="ZAR">
        <Prize position="1" amount="51622"/>
        <Prize position="2" amount="14833"/>
        <Prize position="3" amount="7410"/>
      </Prizes>
      <Eligibility type="3YO plus"/>
      <Distance units="yards" value="1312" text="0m 5f 212y"/>
      <LastWinner year="2011" noRace="No corresponding race"/>
      <Horse id="1702450" name="Festive Interlude" bred="SAF">
    <Cloth number="1"/>
    <Drawn stall="3"/>
    <FormFigures figures="272533" type="FlatSix"/>
    <LastRunDays type="Flat" days="5"/>
    <Age years="4"/>
    <Weight text="9 6" units="pounds" value="132"/>
    <Trainer id="15533" name="D Gray St John"/>
    <Owner name="Mr St John D Gray"/>
    <Jockey id="21795" name="G Lerena"/>
    <JockeyColours filename="20121101vaa104501.png" description="Green, white rings, quartered cap"/>
    <Tackle type="Blinkers" count="10"/>
    <Colour type="b"/>
    <Sex type="f"/>
    <Breeding type="Sire" name="Sarge" bred="SAF" yearBorn="1999"/><Breeding type="Dam" name="Festive Ways" bred="SAF" yearBorn="2000"/><Breeding type="DamSire" name="Model Man" bred="SAF"/>
    <FoalDate date="20080920"/>
    <ForecastPrice>
      <Price numerator="5" denominator="1"/>
      </ForecastPrice>
  </Horse>
      <Horse id="1682817" name="Snow Go" bred="SAF">
    <Cloth number="2"/>
    <Drawn stall="12"/>
    <FormFigures figures="789850" type="FlatSix"/>
    <LastRunDays type="Flat" days="28"/>
    <Age years="4"/>
    <Weight text="9 6" units="pounds" value="132"/>
    <Trainer id="41198" name="Dominic Zaki"/>
    <Owner name="Messrs G, K &amp; M M Nassif &amp; Messrs A G Eaton, R Kay"/>
    <Jockey id="81293" name="Grant Van Niekerk"/>
    <JockeyColours filename="20121101vaa104502.png" description="Red, red and grey checked sleeves, grey cap, red star"/>
    <Colour type="ch"/>
    <Sex type="f"/>
    <Breeding type="Sire" name="Go Deputy" bred="USA" yearBorn="2000"/><Breeding type="Dam" name="Frostbite" bred="SAF" yearBorn="2002"/><Breeding type="DamSire" name="Western Winter" bred="USA" yearBorn="1900"/>
    <FoalDate date="20081003"/>
    <ForecastPrice>
      <Price numerator="14" denominator="1"/>
      </ForecastPrice>
  </Horse>
      <Horse id="1756220" name="Margot On Stage" bred="SAF">
    <Cloth number="3"/>
    <Drawn stall="8"/>
    <FormFigures figures="345342" type="FlatSix"/>
    <LastRunDays type="Flat" days="16"/>
    <Age years="3"/>
    <Weight text="9 4" units="pounds" value="130"/>
    <Trainer id="41149" name="Roy Magner"/>
    <Owner name="Messers M Zackey, S Sheik &amp; D G Zackey"/>
    <Jockey id="28799" name="K Zechner"/>
    <JockeyColours filename="20121101vaa104503.png" description="Black and turquoise halved vertically, turquoise sleeves, halved cap"/>
    <Colour type="b"/>
    <Sex type="f"/>
    <Breeding type="Sire" name="Stagelight" bred="IRE" yearBorn="2002"/><Breeding type="Dam" name="Sweet Margot" bred="SAF" yearBorn="2003"/><Breeding type="DamSire" name="Saumarez" bred="UK" yearBorn="1987"/>
    <FoalDate date="20090920"/>
    <ForecastPrice>
      <Price numerator="7" denominator="4"/>
      </ForecastPrice>
  </Horse>
      <Horse id="1736110" name="Where Eagles Dare" bred="SAF">
    <Cloth number="4"/>
    <Drawn stall="14"/>
    <FormFigures figures="5602" type="FlatSix"/>
    <LastRunDays type="Flat" days="37"/>
    <Age years="3"/>
    <Weight text="9 4" units="pounds" value="130"/>
    <Trainer id="101933" name="Paul Peter" nationality="SAF"/>
    <Owner name="Messrs G T Peter &amp; Joel Peter"/>
    <Jockey id="28071" name="Chad Little"/>
    <JockeyColours filename="20121101vaa104504.png" description="Red and white checks, striped sleeves, white cap"/>
    <Colour type="ch"/>
    <Sex type="f"/>
    <Breeding type="Sire" name="Silvano" bred="GER" yearBorn="1996"/><Breeding type="Dam" name="Aerial Dancer" bred="SAF" yearBorn="1991"/><Breeding type="DamSire" name="Dancing Champ" bred="USA"/>
    <FoalDate date="20091025"/>
    <ForecastPrice>
      <Price numerator="5" denominator="1"/>
      </ForecastPrice>
  </Horse>
      <Horse id="1796892" name="Always Camille" bred="SAF">
    <Cloth number="5"/>
    <Drawn stall="16"/>
    <FormFigures figures="9" type="FlatSix"/>
    <LastRunDays type="Flat" days="37"/>
    <Age years="3"/>
    <Weight text="9 4" units="pounds" value="130"/>
    <Trainer id="46483" name="Barend Daniel Botes"/>
    <Owner name="Mr S J D Mynhardt"/>
    <Jockey id="28083" name="Francois Herholdt"/>
    <JockeyColours filename="20121101vaa104505.png" description="White, pink diamond hoop, white sleeves, pink collar and cuffs, diamonds on cap, white peak"/>
    <Colour type="b"/>
    <Sex type="f"/>
    <Breeding type="Sire" name="Caesour" bred="USA" yearBorn="1990"/><Breeding type="Dam" name="Truely Yours" bred="SAF"/><Breeding type="DamSire" name="Northern Guest" bred="USA" yearBorn="1977"/>
    <FoalDate date="20091022"/>
    <ForecastPrice>
      <Price numerator="20" denominator="1"/>
      </ForecastPrice>
  </Horse>
      <Horse id="1819719" name="Apple At Us" bred="SAF">
    <Cloth number="6"/>
    <Drawn stall="6"/>
    <FormFigures figures="" type="FlatSix"/>
    <Age years="3"/>
    <Weight text="9 4" units="pounds" value="130"/>
    <Trainer id="104350" name="Scott Kenny" nationality="SAF"/>
    <Owner name="Messrs N S W Cullingworth, G D E Kahan, W McLean &amp;"/>
    <Jockey id="41571" name="Timothy Pretorius"/>
    <JockeyColours filename="20121101vaa104506.png" description="Black, gold chevron, black sleeves, gold seams, black cap, gold diamond"/>
    <Colour type="b"/>
    <Sex type="f"/>
    <Breeding type="Sire" name="Eyeofthetiger" bred="BRZ" yearBorn="2002"/><Breeding type="Dam" name="Apple At 'em" bred="SAF" yearBorn="2001"/><Breeding type="DamSire" name="Up And At 'em" bred="UK" yearBorn="1990"/>
    <FoalDate date="20090919"/>
    <ForecastPrice>
      <Price numerator="20" denominator="1"/>
      </ForecastPrice>
  </Horse>
      <Horse id="1819720" name="Brave Princess" bred="SAF">
    <Cloth number="7"/>
    <Drawn stall="1"/>
    <FormFigures figures="" type="FlatSix"/>
    <Age years="3"/>
    <Weight text="9 4" units="pounds" value="130"/>
    <Trainer id="100130" name="Stanley M Ferreira"/>
    <Owner name="Messrs S Rudd &amp; M J Nunes"/>
    <Jockey id="28344" name="Menno Malherbe"/>
    <JockeyColours filename="20121101vaa104507.png" description="Red, pale blue v bib, red sleeves, pale blue cap"/>
    <Colour type="b"/>
    <Sex type="f"/>
    <Breeding type="Sire" name="Mogok" bred="USA"/><Breeding type="Dam" name="Bravo Bamby" bred="SAF" yearBorn="1993"/><Breeding type="DamSire" name="Dolpour" bred="FR"/>
    <FoalDate date="20090818"/>
    <ForecastPrice>
      <Price numerator="20" denominator="1"/>
      </ForecastPrice>
  </Horse>
      <Horse id="1819721" name="Dying Thunder" bred="SAF">
    <Cloth number="8"/>
    <Drawn stall="2"/>
    <FormFigures figures="" type="FlatSix"/>
    <Age years="3"/>
    <Weight text="9 4" units="pounds" value="130"/>
    <Trainer id="43065" name="Wallace Tolmay"/>
    <Owner name="Mrs H E Truter"/>
    <Jockey id="28088" name="Fanie Chambers"/>
    <JockeyColours filename="20121101vaa104508.png" description="Red, white crossed sashes, black sleeves, black and white checked cap"/>
    <Colour type="ch"/>
    <Sex type="f"/>
    <Breeding type="Sire" name="Fort Boyard" bred="SAF" yearBorn="1999"/><Breeding type="Dam" name="Wild Cat Strike" bred="SAF" yearBorn="2002"/><Breeding type="DamSire" name="Restructure" bred="IRE" yearBorn="1992"/>
    <FoalDate date="20091101"/>
    <ForecastPrice>
      <Price numerator="20" denominator="1"/>
      </ForecastPrice>
  </Horse>
      <Horse id="1736913" name="Fine Victory" bred="SAF">
    <Cloth number="9"/>
    <Drawn stall="11"/>
    <FormFigures figures="6" type="FlatSix"/>
    <LastRunDays type="Flat" days="205"/>
    <Age years="3"/>
    <Weight text="9 4" units="pounds" value="130"/>
    <Trainer id="61673" name="Grant Maroun"/>
    <Owner name="Mr &amp; Mrs Mark Aboud &amp; Mesdames L J Schouten, Y J V"/>
    <Jockey id="28377" name="M Yeni"/>
    <JockeyColours filename="20121101vaa104509.png" description="Shocking pink, black diamonds, black collar and cuffs, shocking pink cap, black diamonds and peak"/>
    <Colour type="ch"/>
    <Sex type="f"/>
    <Breeding type="Sire" name="Victory Moon" bred="SAF" yearBorn="1999"/><Breeding type="Dam" name="Fine Image" bred="SAF" yearBorn="2000"/><Breeding type="DamSire" name="Jallad" bred="USA" yearBorn="1988"/>
    <FoalDate date="20090828"/>
    <ForecastPrice>
      <Price numerator="20" denominator="1"/>
      </ForecastPrice>
  </Horse>
      <Horse id="1805775" name="Fortitude" bred="SAF">
    <Cloth number="10"/>
    <Drawn stall="9"/>
    <FormFigures figures="" type="FlatSix"/>
    <Age years="3"/>
    <Weight text="9 4" units="pounds" value="130"/>
    <Trainer id="55813" name="Michael Nicholas Houdalakis" nationality="SAF"/>
    <Owner name="Stone Hill Stud (nom: Mr H C W Rix)"/>
    <Jockey id="28018" name="C Maujean"/>
    <JockeyColours filename="20121101vaa104510.png" description="Lime green, black diamond, lime green sleeves and cap, black diamond"/>
    <Colour type="b"/>
    <Sex type="f"/>
    <Breeding type="Sire" name="Stronghold" bred="UK" yearBorn="2002"/><Breeding type="Dam" name="Mininski" bred="SNL"/><Breeding type="DamSire" name="Ahonoora" bred="UK"/>
    <FoalDate date="20091010"/>
    <ForecastPrice>
      <Price numerator="3" denominator="1"/>
      </ForecastPrice>
  </Horse>
      <Horse id="1819722" name="Idle Hour" bred="SAF">
    <Cloth number="11"/>
    <Drawn stall="4"/>
    <FormFigures figures="" type="FlatSix"/>
    <Age years="3"/>
    <Weight text="9 4" units="pounds" value="130"/>
    <Trainer id="55813" name="Michael Nicholas Houdalakis" nationality="SAF"/>
    <Owner name="Stone Hill Stud (nom: Mr H C W Rix)"/>
    <Jockey id="28069" name="Francois Naude"/>
    <JockeyColours filename="20121101vaa104511.png" description="Lime green, black diamond, lime green sleeves and cap, black diamond"/>
    <Colour type="gr"/>
    <Sex type="f"/>
    <Breeding type="Sire" name="Imperial Stride" bred="UK" yearBorn="2001"/><Breeding type="Dam" name="Time Of My Life" bred="SAF" yearBorn="1994"/><Breeding type="DamSire" name="Royal Messenger" bred="SAF"/>
    <FoalDate date="20091023"/>
    <ForecastPrice>
      <Price numerator="14" denominator="1"/>
      </ForecastPrice>
  </Horse>
      <Horse id="1736926" name="Lady Jallad" bred="SAF">
    <Cloth number="12"/>
    <Drawn stall="5"/>
    <FormFigures figures="075" type="FlatSix"/>
    <LastRunDays type="Flat" days="5"/>
    <Age years="3"/>
    <Weight text="9 4" units="pounds" value="130"/>
    <Trainer id="61673" name="Grant Maroun"/>
    <Owner name="Mr G J Maroun"/>
    <Jockey id="28082" name="Marco V'Rensburg"/>
    <JockeyColours filename="20121101vaa104512.png" description="White, purple maltese cross and cap"/>
    <Colour type="ch"/>
    <Sex type="f"/>
    <Breeding type="Sire" name="Announce" bred="SAF" yearBorn="1997"/><Breeding type="Dam" name="Hey Miss Jallad" bred="SAF" yearBorn="1994"/><Breeding type="DamSire" name="Jallad" bred="USA" yearBorn="1988"/>
    <FoalDate date="20091014"/>
    <ForecastPrice>
      <Price numerator="20" denominator="1"/>
      </ForecastPrice>

  </Horse>
    </Race>
  </Meeting>
</HorseRacingCard>

長い XML ファイルで申し訳ありませんが、それは私が取り組んでいるものです :) - 実際には、各レースにはそれよりも多くのレースと馬が含まれていますが、いくつかのレースに短縮しました - 私は制限を超えていました投稿制限。基本的には、レースと各レースに出走した馬を含む馬の会議です。

私は .csv ファイルの操作と分離に慣れており、それを保護していますが、このままでは、XML ファイルの読み取りとそれに応じたデータベースの更新を開始する必要があるようです。とにかく、私は全体として XML と vb .NET の初心者 (数か月の経験) であり、おそらく早い段階でそのような複雑な XML ファイルに飛び込むべきではありません - 私のコードを以下に投稿します。私がどこで間違っているか（おそらく多くの場合）について正しい方向に私を向け、おそらくこのXMLファイルに取り組むのに役立ついくつかのコード/チュートリアルを提供してください。

私がやろうとしているのは、3 つの異なる構造を作成することです。XML ファイルからの対応する情報を含む、ミーティング、レース、馬。後でデータベースの更新を自分で解決できると思います（うまくいけば）：D

Public Sub ExtractionService(ByVal spfile As FileInfo)
        Dim strreader As New StreamReader(_sendpathname & spfile.Name, System.Text.Encoding.UTF8)
        Dim xmlreader As XmlTextReader = New XmlTextReader(strreader)
        xmlreader.WhitespaceHandling = WhitespaceHandling.None

        Dim xmldoc As New XmlDocument()
        xmldoc.Load(xmlreader)

        Dim xml_nodelist As XmlNodeList = xmldoc.GetElementsByTagName("/HorseRacingCard/Meeting/Race/Horse")

        Dim mStatus As String
        Dim mID As Integer
        Dim mCountry As String
        Dim mCourse As String
        Dim mDate As Integer
        Dim mDrawAdvantage As String
        Dim mAdvancedGoing As String


        For Each mxmlnode As XmlNode In xmldoc.GetElementsByTagName("Meeting")
            mStatus = mxmlnode.Attributes.ItemOf("status").InnerText
            mID = mxmlnode.Attributes.ItemOf("id").InnerText
            mCountry = mxmlnode.Attributes.ItemOf("country").InnerText
            mCourse = mxmlnode.Attributes.ItemOf("course").InnerText
            mDate = mxmlnode.Attributes.ItemOf("date").InnerText
            mDrawAdvantage = mxmlnode.SelectSingleNode("DrawAdvantage").InnerText
            mAdvancedGoing = mxmlnode.SelectSingleNode("AdvancedGoing").InnerText

            _meeting.meetingStatus = mStatus
            _meeting.meetingID = mID
            _meeting.country = mCountry
            _meeting.course = mCourse
            _meeting.meetingDate = mDate
            _meeting.drawAdvantage = mDrawAdvantage
            _meeting.advancedGoing = mAdvancedGoing
        Next

    End Sub

このコードは、会議構造を正常に設定することに成功しましたが、Race 構造と Horse 構造を設定する方法がわかりません :( - いくつかのチュートリアルに従いましたが、理解できません。私はおそらくここで間違ったルートをたどっています.そして、それが私が望むように機能するために、これに追加/変更する必要がある可能性がある.これらの追加と変更が強調表示されたら,私はできると信じています.次に、これらの領域を調査し、皆さんが提供してくれると思われるコードを使用して、これに取り組みます。

繰り返しますが、すべての助けに感謝します。

ありがとう

Answer 1

このような状況では、通常、各クラスに独自の解析関数を持たせるのが最善です。階層の上位にあるクラスは、独自の情報を解析し、含まれているクラスの要素をそれぞれのメソッドに渡すことができます。

また、クラスよりも API と、VB が XLINQ クラス (XElementおよびその仲間) に提供する追加の構文をはるかに好むXmlDocumentので、私の例ではそれらを使用します。一般的なプリンシパルは変更されません。

Class Meeting
    'properties, etc

    Public Shared Function Parse(element As XElement) As Meeting
        'argument error checking here

        Dim ret As New Meeting()

        ret.Status = element.@status
        ret.DrawAdvantage = element.<DrawAdvantage>.Value
        'other properties

        Dim parsedRaces = From re In element.<Race>
                          Select Race.Parse(re)
        For Each r In parsedRaces
            'add to meeting race collection
        Next

        Return ret
    End Function
End Class

Class Race
    'properties, etc

    Public Shared Function Parse(element As XElement) As Race
        'parse and return race data
    End Function
End Class

通常、クラス自体にファイルを直接開くメソッドは配置しません。代わりに、ファイル名を決定するクラス (フォーム、ウィンドウ、ビュー モデル、アプリケーション) がXElementファイルの読み取りと書き込みを担当します。オブジェクトを格納する方法が複数ある場合や、他の階層化の問題がある場合は、 Parse(および関連する) メソッドを別のクラスに移動することもあります。Saveいずれの場合も、例外がスローされた場合に部分的に変更された状態を心配する必要がないように、parse メソッドでクラスの新しいインスタンスを作成して返すようにします。