--两张表链接查询科、属生成XML文件

SELECT Family.FamilyName, Genus.GenusName

FROM Family

JOIN Genus ON Family.FamilyID = Genus.FamilyID

ORDER BY Family.FamilyName, Genus.GenusName

FOR XML AUTO, ROOT('Taxon')

--三张表科、属、种关联查询生成XML文件

SELECT  Family.FamilyName,

        Genus.GenusName,

        Species.AbbreviateName

FROM    Family

        INNER JOIN Genus ON Family.FamilyID = Genus.FamilyID

        INNER JOIN Species ON Genus.GenusID = Species.GenusID

        WHERE dbo.Family.FamilyName='Apiaceae'

        ORDER BY FamilyName,GenusName,AbbreviateName

FOR     XML AUTO,

            ROOT('Taxon')

?xml version="1.0" encoding="UTF-8"?>

<Taxon>

  <Family FamilyName="Apiaceae">

    <Genus GenusName="Acronema">

      <Species AbbreviateName="Acronema alpinum" />

      <Species AbbreviateName="Acronema astrantiifolium" />

      <Species AbbreviateName="Acronema brevipedicellatum" />

      <Species AbbreviateName="Acronema chienii" />

      <Species AbbreviateName="Acronema chienii var. dissectum" />

      <Species AbbreviateName="Acronema chinense" />

      <Species AbbreviateName="Acronema chinense var. humile" />

      <Species AbbreviateName="Acronema commutatum" />

      <Species AbbreviateName="Acronema edosmioides" />

      <Species AbbreviateName="Acronema forrestii" />

      <Species AbbreviateName="Acronema gracile" />

      <Species AbbreviateName="Acronema graminifolium" />

      <Species AbbreviateName="Acronema handelii" />

      <Species AbbreviateName="Acronema hookeri" />

      <Species AbbreviateName="Acronema hookeri var. graminifolium" />

      <Species AbbreviateName="Acronema minus" />

      <Species AbbreviateName="Acronema muscicola" />

      <Species AbbreviateName="Acronema nervosum" />

      <Species AbbreviateName="Acronema paniculatum" />

      <Species AbbreviateName="Acronema schneideri" />

      <Species AbbreviateName="Acronema sichuanense" />

      <Species AbbreviateName="Acronema tenerum" />

      <Species AbbreviateName="Acronema xizangense" />

      <Species AbbreviateName="Acronema yadongense" />

    </Genus>

    <Genus GenusName="Aegopodium">

      <Species AbbreviateName="Aegopodium alpestre" />

      <Species AbbreviateName="Aegopodium alpestre f. scabrum" />

      <Species AbbreviateName="Aegopodium alpestre f. tenerum" />

      <Species AbbreviateName="Aegopodium alpestre f. tenuisectum" />

      <Species AbbreviateName="Aegopodium alpestre var. daucifolium" />

      <Species AbbreviateName="Aegopodium anthriscoides" />

      <Species AbbreviateName="Aegopodium brachycarpum" />

      <Species AbbreviateName="Aegopodium handelii" />

      <Species AbbreviateName="Aegopodium henryi" />

      <Species AbbreviateName="Aegopodium latifolium" />

      <Species AbbreviateName="Aegopodium tadshikorum" />

    </Genus>

    <Genus GenusName="Aethusa">

      <Species AbbreviateName="Aethusa leptophylla" />

    </Genus>

    <Genus GenusName="Albertia">

      <Species AbbreviateName="Albertia commutata" />

    </Genus>

    <Genus GenusName="Ammi">

      <Species AbbreviateName="Ammi copticum" />

      <Species AbbreviateName="Ammi ehrenbergii" />

      <Species AbbreviateName="Ammi majus" />

      <Species AbbreviateName="Ammi visnaga" />

    </Genus>

    <Genus GenusName="Anethum">

      <Species AbbreviateName="Anethum foeniculum" />

      <Species AbbreviateName="Anethum graveolens" />

      <Species AbbreviateName="Anethum graveolens subsp. sowa" />

      <Species AbbreviateName="Anethum japonicum" />

      <Species AbbreviateName="Anethum pannorium" />

      <Species AbbreviateName="Anethum pastinaca" />

      <Species AbbreviateName="Anethum sowa" />

    </Genus>

......

</Taxon>

   1:  using System;

   2:  using System.Web.UI.WebControls;

   3:  using System.Xml;

   4:   

   5:  public partial class Default2 : System.Web.UI.Page

   6:  {

   7:      private string xmlFilePath = @"c:\Data\Apiaceae.xml";

   8:      protected void Page_Load(object sender, EventArgs e)

   9:      {

  10:          XmlDocument doc = new XmlDocument();

  11:          doc.Load(xmlFilePath);

  12:          TreeNode root = new TreeNode(doc.DocumentElement.Name);

  13:          TreeView1.Nodes.Add(root);

  14:          foreach (XmlNode familynode in doc.DocumentElement.ChildNodes)

  15:          {

  16:              TreeNode family = new TreeNode("Family: " + familynode.Attributes["FamilyName"].Value + " (" + familynode.ChildNodes.Count.ToString() + ")");

  17:              root.ChildNodes.Add(family);

  18:              if (familynode.HasChildNodes)

  19:              {

  20:                  foreach (XmlNode genusnode in familynode.ChildNodes)

  21:                  {

  22:                      TreeNode n2 = new TreeNode("Genus: " + genusnode.Attributes["GenusName"].Value+" ("+genusnode.ChildNodes.Count.ToString()+")");

  23:                      family.ChildNodes.Add(n2);

  24:                      if (genusnode.HasChildNodes)

  25:                      {

  26:                          foreach (XmlNode speciesnode in genusnode.ChildNodes)

  27:                          {

  28:                              TreeNode n3=new TreeNode("Species: "+speciesnode.Attributes["AbbreviateName"].Value);

  29:                              n2.ChildNodes.Add(n3);

  30:                          }

  31:                      }

  32:                  }

  33:              }

  34:          }

  35:      }

  36:  }