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XPathNavigator.Select Method
.NET Framework 1.1
Selects a node set using the specified XPath expression.
Overload List
Selects a node set using the specified XPath expression.
[Visual Basic] Overloads Public Overridable Function Select(String) As XPathNodeIterator
[C#] public virtual XPathNodeIterator Select(string);
[C++] public: virtual XPathNodeIterator* Select(String*);
[JScript] public function Select(String) : XPathNodeIterator;
Selects a node set using the specified XPathExpression.
[Visual Basic] Overloads Public Overridable Function Select(XPathExpression) As XPathNodeIterator
[C#] public virtual XPathNodeIterator Select(XPathExpression);
[C++] public: virtual XPathNodeIterator* Select(XPathExpression*);
[JScript] public function Select(XPathExpression) : XPathNodeIterator;
Example
[Visual Basic, C#, C++] The following example selects all books by Jane Austen and sorts them by title.
[Visual Basic, C#, C++] Note This example shows how to use one of the overloaded versions of Select. For other examples that might be available, see the individual overload topics.
[Visual Basic] Imports System Imports System.IO Imports System.Xml Imports System.Xml.XPath public class Sample public shared sub Main() Dim doc as XPathDocument = new XPathDocument("booksort.xml") Dim nav as XPathNavigator = doc.CreateNavigator() 'Select all books by Jane Austen. Dim expr as XPathExpression expr = nav.Compile("descendant::book[author/last-name='Austen']") 'Sort the selected books by title. expr.AddSort("title", XmlSortOrder.Ascending, XmlCaseOrder.None, "", XmlDataType.Text) 'Display the selection. Dim iterator as XPathNodeIterator = nav.Select(expr) while (iterator.MoveNext()) Dim nav2 as XPathNavigator = iterator.Current.Clone() nav2.MoveToFirstChild() Console.WriteLine("Book title: {0}", nav2.Value) end while end sub end class [C#] using System; using System.IO; using System.Xml; using System.Xml.XPath; public class Sample { public static void Main() { XPathDocument doc = new XPathDocument("booksort.xml"); XPathNavigator nav = doc.CreateNavigator(); //Select all books by Jane Austen. XPathExpression expr; expr = nav.Compile("descendant::book[author/last-name='Austen']"); //Sort the selected books by title. expr.AddSort("title", XmlSortOrder.Ascending, XmlCaseOrder.None, "", XmlDataType.Text); //Display the selection. XPathNodeIterator iterator = nav.Select(expr); while (iterator.MoveNext()){ XPathNavigator nav2 = iterator.Current.Clone(); nav2.MoveToFirstChild(); Console.WriteLine("Book title: {0}", nav2.Value); } } } [C++] #using <mscorlib.dll> #using <System.Xml.dll> using namespace System; using namespace System::IO; using namespace System::Xml; using namespace System::Xml::XPath; int main() { XPathDocument* doc = new XPathDocument(S"booksort.xml"); XPathNavigator* nav = doc->CreateNavigator(); //Select all books by Jane Austen. XPathExpression* expr; expr = nav->Compile(S"descendant::book[author/last-name='Austen']"); //Sort the selected books by title. expr->AddSort(S"title", XmlSortOrder::Ascending, XmlCaseOrder::None, S"", XmlDataType::Text); //Display the selection. XPathNodeIterator* iterator = nav->Select(expr); while (iterator->MoveNext()){ XPathNavigator* nav2 = iterator->Current->Clone(); nav2->MoveToFirstChild(); Console::WriteLine(S"Book title: {0}", nav2->Value); } }
[Visual Basic, C#, C++] The example uses the file, booksort.xml, as input.
<?xml version="1.0"?>
<!-- a fragment of a book store inventory database -->
<bookstore xmlns:bk="urn:samples">
<book genre="novel" publicationdate="1997" bk:ISBN="1-861001-57-8">
<title>Pride And Prejudice</title>
<author>
<first-name>Jane</first-name>
<last-name>Austen</last-name>
</author>
<price>24.95</price>
</book>
<book genre="novel" publicationdate="1992" bk:ISBN="1-861002-30-1">
<title>The Handmaid's Tale</title>
<author>
<first-name>Margaret</first-name>
<last-name>Atwood</last-name>
</author>
<price>29.95</price>
</book>
<book genre="novel" publicationdate="1991" bk:ISBN="1-861001-57-6">
<title>Emma</title>
<author>
<first-name>Jane</first-name>
<last-name>Austen</last-name>
</author>
<price>19.95</price>
</book>
<book genre="novel" publicationdate="1982" bk:ISBN="1-861001-45-3">
<title>Sense and Sensibility</title>
<author>
<first-name>Jane</first-name>
<last-name>Austen</last-name>
</author>
<price>19.95</price>
</book>
</bookstore>
[JScript] No example is available for JScript. To view a Visual Basic, C#, or C++ example, click the Language Filter button
in the upper-left corner of the page.
See Also
XPathNavigator Class | XPathNavigator Members | System.Xml.XPath Namespace
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