ASP.NET Tutorial/XML/XmlDataSource — различия между версиями

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Текущая версия на 14:57, 26 мая 2010

Create XmlDataSource

   <source lang="csharp">

<%@ Page Language="C#" AutoEventWireup="true" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" > <head runat="server">

   <title>XML Data Binding</title>

</head> <body>

   <form id="form1" runat="server">
   <asp:XmlDataSource ID="sourceXml" 
                      runat="server"
                      DataFile="data.xml" />
   <asp:GridView ID="GridView1" 
                 runat="server" 
                 AutoGenerateColumns="True"
                 DataSourceID="sourceXml" 
                 Visible="False"/>
   
<asp:TreeView ID="TreeView1" runat="server" DataSourceID="sourceXml"> <DataBindings> <asp:TreeNodeBinding DataMember="SuperProProductList" Text="Product List" /> <asp:TreeNodeBinding DataMember="Category" TextField="Name" /> <asp:TreeNodeBinding DataMember="Product" TextField="Name" /> <asp:TreeNodeBinding DataMember="Price" TextField="#InnerText" /> </DataBindings> </asp:TreeView>
   </form>

</body> </html> File: data.xml <?xml version="1.0" standalone="yes"?> <SuperProProductList xmlns="SuperProProductList" >

 <Category Name="Hardware">
   <Product ID="1" Name="Chair">
     <Price>49.33</Price>
   </Product>
   <Product ID="2" Name="Car">
     <Price>43398.55</Price>
   </Product>
 </Category>
 <Category Name="Produce">
   <Product ID="3" Name="PC">
     <Price>49.99</Price>
   </Product>
 </Category>

</SuperProProductList></source>


Displaying an XML document with the Menu control.

   <source lang="csharp">

File: Data.xml <menu>

 <category text="appetizer">
   <item text="soup" price="12.56" />
   <item text="cheese" price="17.23" />
 </category>
 <category text="entree">
   <item text="duck" price="89.21" />
   <item text="chicken" price="34.56" />
 </category>
 <category text="dessert">
   <item text="cake" price="23.43" />
   <item text="pie" price="115.46" />
 </category>

</menu> <%@ Page Language="C#" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN"

  "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">

<html xmlns="http://www.w3.org/1999/xhtml" > <head id="Head1" runat="server">

   <title>Menu XML Complex</title>

</head> <body>

   <form id="form1" runat="server">
   <asp:Menu
       id="Menu1"
       DataSourceID="srcMenu"
       Runat="server">
       <DataBindings>
       <asp:MenuItemBinding
           DataMember="category"
           TextField="text" />
       <asp:MenuItemBinding
           DataMember="item"
           TextField="text"
           ValueField="price" />
       </DataBindings>
   </asp:Menu>
   <asp:XmlDataSource
       id="srcMenu"
       DataFile="Data.xml"
       Runat="server" />
   </form>

</body> </html></source>


Transform XmlDataSource with XSLT

   <source lang="csharp">

<%@ Page Language="C#" AutoEventWireup="false"%> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" > <head runat="server">

   <title>Untitled Page</title>

</head> <body>

   <form id="form1" runat="server">
    <asp:XmlDataSource ID="sourceDVD" 
                       runat="server" 
                       DataFile="~/Data.xml"
                       TransformFile="Data.xsl"/>
    <asp:TreeView ID="TreeView1" 
                  runat="server" 
                  DataSourceID="sourceDVD"
                  AutoGenerateDataBindings="False">
           <DataBindings>
               <asp:TreeNodeBinding DataMember="Movies" Text="Movies" />
               <asp:TreeNodeBinding DataMember="DVD" TextField="Title" />
               <asp:TreeNodeBinding DataMember="Stars" TextField="Name" />
           </DataBindings>
    </asp:TreeView>
   </form>

</body> </html> File: Data.xml <?xml version="1.0"?> <DvdList>

  <DVD ID="1" Category="Category 1">
     <Title>title 1</Title>
     <Director>directory 2</Director>
     <Price>1</Price>
     <Starring>
        <Star>star 1</Star>
        <Star>star 2</Star>
     </Starring>
  </DVD>
  <DVD ID="2" Category="Category 2">
     <Title>title 2</Title>
     <Director>directory 2</Director>
     <Price>2</Price>
     <Starring>
        <Star>star 3</Star>
        <Star>star 4</Star>
     </Starring>
  </DVD>

</DvdList> File: Data.xsl <xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0">

 <xsl:output method="xml"/>
 <xsl:template match="/">
   <xsl:element name="Movies">
     <xsl:apply-templates select="//DVD" />
   </xsl:element>
 </xsl:template>
 <xsl:template match="DVD">
   <xsl:element name="{name()}">
     <xsl:attribute name="ID">
       <xsl:value-of select="@ID"/>
     </xsl:attribute>
     <xsl:attribute name="Title">
       <xsl:value-of select="Title/text()"/>
     </xsl:attribute>
     <xsl:apply-templates select="Starring" />
   </xsl:element>
 </xsl:template>
 <xsl:template match="Starring">
   <xsl:element name="Stars">
     <xsl:attribute name="Name">
       <xsl:value-of select="Star/text()"/>
     </xsl:attribute>
   </xsl:element>
 </xsl:template>
 

</xsl:stylesheet></source>


XmlDataSource and XPath

   <source lang="csharp">

<%@ Page Language="C#" AutoEventWireup="false" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" > <head runat="server">

   <title>Untitled Page</title>

</head> <body>

   <form id="form1" runat="server">
       <asp:XmlDataSource ID="sourceDVD" 
                          runat="server" 
                          DataFile="~/Data.xml" 
                          XPath="/DvdList/DVD/Starring/Star"/>
          <asp:GridView ID="GridView1" 
                        runat="server" 
                        DataSourceID="sourceDVD" 
                        AutoGenerateColumns="False">
             <Columns>
               <asp:TemplateField HeaderText="DVD">
                 <ItemTemplate>
                   <%# XPath(".")%>
</ItemTemplate> </asp:TemplateField> </Columns> </asp:GridView>
   </form>

</body> </html> File: Data.xml <?xml version="1.0"?> <DvdList>

  <DVD ID="1" Category="Category 1">
     <Title>title 1</Title>
     <Director>directory 2</Director>
     <Price>1</Price>
     <Starring>
        <Star>star 1</Star>
        <Star>star 2</Star>
     </Starring>
  </DVD>
  <DVD ID="2" Category="Category 2">
     <Title>title 2</Title>
     <Director>directory 2</Director>
     <Price>2</Price>
     <Starring>
        <Star>star 3</Star>
        <Star>star 4</Star>
     </Starring>
  </DVD>

</DvdList></source>