XmlAttribute.NamespaceURI 属性

定义

获取该节点的命名空间 URI。Gets the namespace URI of this node.

public:
 virtual property System::String ^ NamespaceURI { System::String ^ get(); };
public override string NamespaceURI { get; }
member this.NamespaceURI : string
Public Overrides ReadOnly Property NamespaceURI As String

属性值

String

该节点的命名空间 URI。The namespace URI of this node. 如果没有显式地为特性指定一个命名空间,则此属性返回 String.Empty。If the attribute is not explicitly given a namespace, this property returns String.Empty.

示例

下面的示例显示了有关特性集合中的每个节点的信息。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

注解

特性不会从其附加到的元素继承其命名空间。An attribute does not inherit its namespace from the element it is attached to. 如果没有为属性显式给定命名空间,则将命名空间 URI 视为 String。If an attribute is not explicitly given a namespace, the namespace URI is considered to be String.Empty.

适用于