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XPathNavigator.ReplaceSelf Method

  • Reference

Definition

Namespace:
System.Xml.XPath
Assembly:
System.Xml.ReaderWriter.dll
Assembly:
System.Xml.XPath.dll
Assembly:
System.Xml.dll
Assembly:
netstandard.dll

Replaces the current node with the content specified.

Overloads

ReplaceSelf(XmlReader)

Replaces the current node with the contents of the XmlReader object specified.
ReplaceSelf(XPathNavigator)

Replaces the current node with the contents of the XPathNavigator object specified.
ReplaceSelf(String)

Replaces the current node with the content of the string specified.

ReplaceSelf(XmlReader)

Source:
XPathNavigator.cs
Source:
XPathNavigator.cs
Source:
XPathNavigator.cs

Replaces the current node with the contents of the XmlReader object specified.

public:
 virtual void ReplaceSelf(System::Xml::XmlReader ^ newNode);
public virtual void ReplaceSelf (System.Xml.XmlReader newNode);
abstract member ReplaceSelf : System.Xml.XmlReader -> unit
override this.ReplaceSelf : System.Xml.XmlReader -> unit
Public Overridable Sub ReplaceSelf (newNode As XmlReader)

Parameters

newNode
XmlReader

An XmlReader object positioned on the XML data for the new node.

Exceptions

ArgumentException

The XmlReader object is in an error state or closed.

ArgumentNullException

The XmlReader object parameter is null.

InvalidOperationException

The XPathNavigator is not positioned on an element, text, processing instruction, or comment node.

NotSupportedException

The XPathNavigator does not support editing.

XmlException

The XML contents of the XmlReader object parameter is not well-formed.

Examples

In the following example the price element in the contosoBooks.xml file is replaced by a new pages element.

XmlDocument^ document = gcnew XmlDocument();
document->Load("contosoBooks.xml");
XPathNavigator^ navigator = document->CreateNavigator();

navigator->MoveToChild("bookstore", "http://www.contoso.com/books");
navigator->MoveToChild("book", "http://www.contoso.com/books");
navigator->MoveToChild("price", "http://www.contoso.com/books");

XmlReader^ pages = XmlReader::Create(gcnew StringReader("<pages xmlns=\"http://www.contoso.com/books\">100</pages>"));

navigator->ReplaceSelf(pages);

Console::WriteLine("Position after delete: {0}", navigator->Name);
Console::WriteLine(navigator->OuterXml);

XmlDocument document = new XmlDocument();
document.Load("contosoBooks.xml");
XPathNavigator navigator = document.CreateNavigator();

navigator.MoveToChild("bookstore", "http://www.contoso.com/books");
navigator.MoveToChild("book", "http://www.contoso.com/books");
navigator.MoveToChild("price", "http://www.contoso.com/books");

XmlReader pages = XmlReader.Create(new StringReader("<pages xmlns=\"http://www.contoso.com/books\">100</pages>"));

navigator.ReplaceSelf(pages);

Console.WriteLine("Position after delete: {0}", navigator.Name);
Console.WriteLine(navigator.OuterXml);

Dim document As XmlDocument = New XmlDocument()
document.Load("contosoBooks.xml")
Dim navigator As XPathNavigator = document.CreateNavigator()

navigator.MoveToChild("bookstore", "http://www.contoso.com/books")
navigator.MoveToChild("book", "http://www.contoso.com/books")
navigator.MoveToChild("price", "http://www.contoso.com/books")

Dim pages As XmlReader = XmlReader.Create(New StringReader("<pages xmlns='http://www.contoso.com/books'>100</pages>"))

navigator.ReplaceSelf(pages)

Console.WriteLine("Position after delete: {0}", navigator.Name)
Console.WriteLine(navigator.OuterXml)

The example takes the contosoBooks.xml file as an input.

<?xml version="1.0" encoding="utf-8" ?>  
<bookstore xmlns="http://www.contoso.com/books">  
    <book genre="autobiography" publicationdate="1981-03-22" ISBN="1-861003-11-0">  
        <title>The Autobiography of Benjamin Franklin</title>  
        <author>  
            <first-name>Benjamin</first-name>  
            <last-name>Franklin</last-name>  
        </author>  
        <price>8.99</price>  
    </book>  
    <book genre="novel" publicationdate="1967-11-17" ISBN="0-201-63361-2">  
        <title>The Confidence Man</title>  
        <author>  
            <first-name>Herman</first-name>  
            <last-name>Melville</last-name>  
        </author>  
        <price>11.99</price>  
    </book>  
    <book genre="philosophy" publicationdate="1991-02-15" ISBN="1-861001-57-6">  
        <title>The Gorgias</title>  
        <author>  
            <name>Plato</name>  
        </author>  
        <price>9.99</price>  
    </book>  
</bookstore>

Remarks

The XPathNavigator is positioned on the new node on completion of the ReplaceSelf method and returns true. The XPathNavigator is not positioned on the new node after completion of the ReplaceSelf method when the XML input is Empty in which case the XPathNavigator is either positioned on the next sibling node or the parent node if there is no next sibling node to the replaced node and the ReplaceSelf returns false.

  • The ReplaceSelf method is valid only when the XPathNavigator is positioned on an element, text, processing instruction, or comment node.

  • If the XML data string is not well-formed than an exception is thrown and the result of this method is equivalent to calling DeleteSelf on the current node.

  • If the XML string contains multiple nodes, all nodes are added and the XPathNavigator is positioned on the first node in the series of nodes.

  • The ReplaceSelf method is not equivalent to the DeleteSelf method.

Applies to

ReplaceSelf(XPathNavigator)

Source:
XPathNavigator.cs
Source:
XPathNavigator.cs
Source:
XPathNavigator.cs

Replaces the current node with the contents of the XPathNavigator object specified.

public:
 virtual void ReplaceSelf(System::Xml::XPath::XPathNavigator ^ newNode);
public virtual void ReplaceSelf (System.Xml.XPath.XPathNavigator newNode);
abstract member ReplaceSelf : System.Xml.XPath.XPathNavigator -> unit
override this.ReplaceSelf : System.Xml.XPath.XPathNavigator -> unit
Public Overridable Sub ReplaceSelf (newNode As XPathNavigator)

Parameters

newNode
XPathNavigator

An XPathNavigator object positioned on the new node.

Exceptions

ArgumentNullException

The XPathNavigator object parameter is null.

InvalidOperationException

The XPathNavigator is not positioned on an element, text, processing instruction, or comment node.

NotSupportedException

The XPathNavigator does not support editing.

XmlException

The XML contents of the XPathNavigator object parameter is not well-formed.

Examples

In the following example the price element in the contosoBooks.xml file is replaced by a new pages element.

XmlDocument^ document = gcnew XmlDocument();
document->Load("contosoBooks.xml");
XPathNavigator^ navigator = document->CreateNavigator();

navigator->MoveToChild("bookstore", "http://www.contoso.com/books");
navigator->MoveToChild("book", "http://www.contoso.com/books");
navigator->MoveToChild("price", "http://www.contoso.com/books");

XmlDocument^ childNodes = gcnew XmlDocument();
childNodes->Load(gcnew StringReader("<pages xmlns=\"http://www.contoso.com/books\">100</pages>"));
XPathNavigator^ childNodesNavigator = childNodes->CreateNavigator();

navigator->ReplaceSelf(childNodesNavigator);

Console::WriteLine("Position after delete: {0}", navigator->Name);
Console::WriteLine(navigator->OuterXml);

XmlDocument document = new XmlDocument();
document.Load("contosoBooks.xml");
XPathNavigator navigator = document.CreateNavigator();

navigator.MoveToChild("bookstore", "http://www.contoso.com/books");
navigator.MoveToChild("book", "http://www.contoso.com/books");
navigator.MoveToChild("price", "http://www.contoso.com/books");

XmlDocument childNodes = new XmlDocument();
childNodes.Load(new StringReader("<pages xmlns=\"http://www.contoso.com/books\">100</pages>"));
XPathNavigator childNodesNavigator = childNodes.CreateNavigator();

navigator.ReplaceSelf(childNodesNavigator);

Console.WriteLine("Position after delete: {0}", navigator.Name);
Console.WriteLine(navigator.OuterXml);

Dim document As XmlDocument = New XmlDocument()
document.Load("contosoBooks.xml")
Dim navigator As XPathNavigator = document.CreateNavigator()

navigator.MoveToChild("bookstore", "http://www.contoso.com/books")
navigator.MoveToChild("book", "http://www.contoso.com/books")
navigator.MoveToChild("price", "http://www.contoso.com/books")

Dim childNodes As XmlDocument = New XmlDocument()
childNodes.Load(New StringReader("<pages xmlns='http://www.contoso.com/books'>100</pages>"))
Dim childNodesNavigator As XPathNavigator = childNodes.CreateNavigator()

navigator.ReplaceSelf(childNodesNavigator)

Console.WriteLine("Position after delete: {0}", navigator.Name)
Console.WriteLine(navigator.OuterXml)

The example takes the contosoBooks.xml file as an input.

<?xml version="1.0" encoding="utf-8" ?>  
<bookstore xmlns="http://www.contoso.com/books">  
    <book genre="autobiography" publicationdate="1981-03-22" ISBN="1-861003-11-0">  
        <title>The Autobiography of Benjamin Franklin</title>  
        <author>  
            <first-name>Benjamin</first-name>  
            <last-name>Franklin</last-name>  
        </author>  
        <price>8.99</price>  
    </book>  
    <book genre="novel" publicationdate="1967-11-17" ISBN="0-201-63361-2">  
        <title>The Confidence Man</title>  
        <author>  
            <first-name>Herman</first-name>  
            <last-name>Melville</last-name>  
        </author>  
        <price>11.99</price>  
    </book>  
    <book genre="philosophy" publicationdate="1991-02-15" ISBN="1-861001-57-6">  
        <title>The Gorgias</title>  
        <author>  
            <name>Plato</name>  
        </author>  
        <price>9.99</price>  
    </book>  
</bookstore>

Remarks

The XPathNavigator is positioned on the new node on completion of the ReplaceSelf method and returns true. The XPathNavigator is not positioned on the new node after completion of the ReplaceSelf method when the XML input is Empty in which case the XPathNavigator is either positioned on the next sibling node or the parent node if there is no next sibling node to the replaced node and the ReplaceSelf returns false.

  • The ReplaceSelf method is valid only when the XPathNavigator is positioned on an element, text, processing instruction, or comment node.

  • If the XML data string is not well-formed than an exception is thrown and the result of this method is equivalent to calling DeleteSelf on the current node.

  • If the XML string contains multiple nodes, all nodes are added and the XPathNavigator is positioned on the first node in the series of nodes.

  • The ReplaceSelf method is not equivalent to the DeleteSelf method.

Applies to

ReplaceSelf(String)

Source:
XPathNavigator.cs
Source:
XPathNavigator.cs
Source:
XPathNavigator.cs

Replaces the current node with the content of the string specified.

public:
 virtual void ReplaceSelf(System::String ^ newNode);
public virtual void ReplaceSelf (string newNode);
abstract member ReplaceSelf : string -> unit
override this.ReplaceSelf : string -> unit
Public Overridable Sub ReplaceSelf (newNode As String)

Parameters

newNode
String

The XML data string for the new node.

Exceptions

ArgumentNullException

The XML string parameter is null.

InvalidOperationException

The XPathNavigator is not positioned on an element, text, processing instruction, or comment node.

NotSupportedException

The XPathNavigator does not support editing.

XmlException

The XML string parameter is not well-formed.

Examples

In the following example the price element in the contosoBooks.xml file is replaced by a new pages element.

XmlDocument^ document = gcnew XmlDocument();
document->Load("contosoBooks.xml");
XPathNavigator^ navigator = document->CreateNavigator();

navigator->MoveToChild("bookstore", "http://www.contoso.com/books");
navigator->MoveToChild("book", "http://www.contoso.com/books");
navigator->MoveToChild("price", "http://www.contoso.com/books");

navigator->ReplaceSelf("<pages>100</pages>");

Console::WriteLine("Position after delete: {0}", navigator->Name);
Console::WriteLine(navigator->OuterXml);

XmlDocument document = new XmlDocument();
document.Load("contosoBooks.xml");
XPathNavigator navigator = document.CreateNavigator();

navigator.MoveToChild("bookstore", "http://www.contoso.com/books");
navigator.MoveToChild("book", "http://www.contoso.com/books");
navigator.MoveToChild("price", "http://www.contoso.com/books");

navigator.ReplaceSelf("<pages>100</pages>");

Console.WriteLine("Position after delete: {0}", navigator.Name);
Console.WriteLine(navigator.OuterXml);

Dim document As XmlDocument = New XmlDocument()
document.Load("contosoBooks.xml")
Dim navigator As XPathNavigator = document.CreateNavigator()

navigator.MoveToChild("bookstore", "http://www.contoso.com/books")
navigator.MoveToChild("book", "http://www.contoso.com/books")
navigator.MoveToChild("price", "http://www.contoso.com/books")

navigator.ReplaceSelf("<pages>100</pages>")

Console.WriteLine("Position after delete: {0}", navigator.Name)
Console.WriteLine(navigator.OuterXml)

The example takes the contosoBooks.xml file as an input.

<?xml version="1.0" encoding="utf-8" ?>  
<bookstore xmlns="http://www.contoso.com/books">  
    <book genre="autobiography" publicationdate="1981-03-22" ISBN="1-861003-11-0">  
        <title>The Autobiography of Benjamin Franklin</title>  
        <author>  
            <first-name>Benjamin</first-name>  
            <last-name>Franklin</last-name>  
        </author>  
        <price>8.99</price>  
    </book>  
    <book genre="novel" publicationdate="1967-11-17" ISBN="0-201-63361-2">  
        <title>The Confidence Man</title>  
        <author>  
            <first-name>Herman</first-name>  
            <last-name>Melville</last-name>  
        </author>  
        <price>11.99</price>  
    </book>  
    <book genre="philosophy" publicationdate="1991-02-15" ISBN="1-861001-57-6">  
        <title>The Gorgias</title>  
        <author>  
            <name>Plato</name>  
        </author>  
        <price>9.99</price>  
    </book>  
</bookstore>

Remarks

The XPathNavigator is positioned on the new node on completion of the ReplaceSelf method and returns true. The XPathNavigator is not positioned on the new node after completion of the ReplaceSelf method when the XML input is Empty in which case the XPathNavigator is either positioned on the next sibling node or the parent node if there is no next sibling node to the replaced node and the ReplaceSelf returns false.

  • The ReplaceSelf method is valid only when the XPathNavigator is positioned on an element, text, processing instruction, or comment node.

  • If the XML data string is not well-formed than an exception is thrown and the result of this method is equivalent to calling DeleteSelf on the current node.

  • If the XML string contains multiple nodes, all nodes are added and the XPathNavigator is positioned on the first node in the series of nodes.

  • The ReplaceSelf method is not equivalent to the DeleteSelf method.

Applies to