XmlAttribute.Prefix Property
Definition
Important
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Gets or sets the namespace prefix of this node.
public:
virtual property System::String ^ Prefix { System::String ^ get(); void set(System::String ^ value); };
public override string Prefix { get; set; }
member this.Prefix : string with get, set
Public Overrides Property Prefix As String
Property Value
The namespace prefix of this node. If there is no prefix, this property returns String.Empty.
Exceptions
This node is read-only.
The specified prefix contains an invalid character.
The specified prefix is malformed.
The namespaceURI of this node is null
.
The specified prefix is "xml", and the namespaceURI of this node is different from "http://www.w3.org/XML/1998/namespace".
This node is an attribute, the specified prefix is "xmlns", and the namespaceURI of this node is different from "http://www.w3.org/2000/xmlns/".
This node is an attribute, and the qualifiedName of this node is "xmlns" [Namespaces].
Examples
The following example displays information on each of the nodes in the attribute collection.
#using <System.Xml.dll>
using namespace System;
using namespace System::IO;
using namespace System::Xml;
int main()
{
XmlDocument^ doc = gcnew XmlDocument;
doc->LoadXml( "<book xmlns:bk='urn:samples' bk:genre='novel'><title>Pride And Prejudice</title></book>" );
//Create an attribute collection.
XmlAttributeCollection^ attrColl = doc->DocumentElement->Attributes;
Console::WriteLine( "Display information on each of the attributes... \r\n" );
System::Collections::IEnumerator^ myEnum = attrColl->GetEnumerator();
while ( myEnum->MoveNext() )
{
XmlAttribute^ attr = safe_cast<XmlAttribute^>(myEnum->Current);
Console::Write( "{0}:{1} = {2}", attr->Prefix, attr->LocalName, attr->Value );
Console::WriteLine( "\t namespaceURI={0}", attr->NamespaceURI );
}
}
using System;
using System.IO;
using System.Xml;
public class Sample
{
public static void Main(){
XmlDocument doc = new XmlDocument();
doc.LoadXml("<book xmlns:bk='urn:samples' bk:genre='novel'>" +
"<title>Pride And Prejudice</title>" +
"</book>");
//Create an attribute collection.
XmlAttributeCollection attrColl = doc.DocumentElement.Attributes;
Console.WriteLine("Display information on each of the attributes... \r\n");
foreach (XmlAttribute attr in attrColl){
Console.Write("{0}:{1} = {2}", attr.Prefix, attr.LocalName, attr.Value);
Console.WriteLine("\t namespaceURI=" + attr.NamespaceURI);
}
}
}
Imports System.IO
Imports System.Xml
public class Sample
public shared sub Main()
Dim doc as XmlDocument = new XmlDocument()
doc.LoadXml("<book xmlns:bk='urn:samples' bk:genre='novel'>" & _
"<title>Pride And Prejudice</title>" & _
"</book>")
'Create an attribute collection.
Dim attrColl as XmlAttributeCollection = doc.DocumentElement.Attributes
Console.WriteLine("Display information on each of the attributes... ")
Dim attr as XmlAttribute
for each attr in attrColl
Console.Write("{0}:{1} = {2}", attr.Prefix, attr.LocalName, attr.Value)
Console.WriteLine(" namespaceURI=" + attr.NamespaceURI)
next
end sub
end class
Remarks
Because changing the prefix of an attribute does not change its namespace URI, changing the prefix of an attribute that is known to have a default value does not create a new attribute with the default value and the original prefix.
Applies to
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