XmlNamespaceManager.LookupNamespace(String) Method

public:
 virtual System::String ^ LookupNamespace(System::String ^ prefix);

public virtual string LookupNamespace(string prefix);

public virtual string? LookupNamespace(string prefix);

abstract member LookupNamespace : string -> string
override this.LookupNamespace : string -> string

Public Overridable Function LookupNamespace (prefix As String) As String

Parameters

Returns

The namespace URI for prefix or null if there is no mapped namespace. The returned string is atomized.

For more information on atomized strings, see the XmlNameTable class.

Implements

Examples

The following example adds prefix/namespace pairs to the XmlNamespaceManager, and then displays all the pairs in the collection.

using System;
using System.IO;
using System.Xml;

public class Sample
{
 public static void Main()
 {
 Sample test = new Sample();
 }
 public Sample()
 {
 // Create the XmlNamespaceManager.
 NameTable nt = new NameTable();
 XmlNamespaceManager nsmgr = new XmlNamespaceManager(nt);

 // Add prefix/namespace pairs to the XmlNamespaceManager.
 nsmgr.AddNamespace("", "www.wideworldimporters.com"); //Adds a default namespace.
 nsmgr.AddNamespace("europe", "www.wideworldimporters.com/europe");
 nsmgr.PushScope(); //Pushes a namespace scope on the stack.
 nsmgr.AddNamespace("", "www.lucernepublishing.com"); //Adds another default namespace.
 nsmgr.AddNamespace("partners", "www.lucernepublishing.com/partners");

 Console.WriteLine("Show all the prefix/namespace pairs in the XmlNamespaceManager...");
 ShowAllNamespaces(nsmgr);
 }

 private void ShowAllNamespaces(XmlNamespaceManager nsmgr)
 {
 do{
 foreach (String prefix in nsmgr)
 {
 Console.WriteLine("Prefix={0}, Namespace={1}", prefix,nsmgr.LookupNamespace(prefix));
 }
 }
 while (nsmgr.PopScope());
 }
}

Option Explicit
Option Strict

Imports System.IO
Imports System.Xml

Public Class Sample
 
 Public Shared Sub Main()
 Dim test As New Sample()
 End Sub
 
 Public Sub New()
 ' Create the XmlNamespaceManager.
 Dim nt As New NameTable()
 Dim nsmgr As New XmlNamespaceManager(nt)
 
 ' Add prefix/namespace pairs to the XmlNamespaceManager.
 nsmgr.AddNamespace("", "www.wideworldimporters.com") 'Adds a default namespace.
 nsmgr.AddNamespace("europe", "www.wideworldimporters.com/europe")
 nsmgr.PushScope() 'Pushes a namespace scope on the stack.
 nsmgr.AddNamespace("", "www.lucernepublishing.com") 'Adds another default namespace.
 nsmgr.AddNamespace("partners", "www.lucernepublishing.com/partners")
 
 Console.WriteLine("Show all the prefix/namespace pairs in the XmlNamespaceManager...")
 ShowAllNamespaces(nsmgr)
 End Sub
 
 
 Private Sub ShowAllNamespaces(nsmgr As XmlNamespaceManager)
 Do
 Dim prefix As String
 For Each prefix In nsmgr
 Console.WriteLine("Prefix={0}, Namespace={1}", prefix, nsmgr.LookupNamespace(prefix))
 Next prefix
 Loop While nsmgr.PopScope()
 End Sub
End Class

See also

• LookupPrefix(String)
• XML Documents and Data
• Managing Namespaces in an XML Document