XmlReader.Prefix Property
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When overridden in a derived class, gets the namespace prefix associated with the current node.
public:
abstract property System::String ^ Prefix { System::String ^ get(); };
public abstract string Prefix { get; }
member this.Prefix : string
Public MustOverride ReadOnly Property Prefix As String
The namespace prefix associated with the current node.
An XmlReader method was called before a previous asynchronous operation finished. In this case, InvalidOperationException is thrown with the message "An asynchronous operation is already in progress."
The following example displays the local name of each node, and, if they exist, the prefix and namespace URI.
XmlReader reader = XmlReader.Create("book2.xml");
// Parse the file. If they exist, display the prefix and
// namespace URI of each node.
while (reader.Read()) {
if (reader.IsStartElement()) {
if (reader.Prefix==String.Empty)
{
Console.WriteLine("<{0}>", reader.LocalName);
}
else {
Console.Write("<{0}:{1}>", reader.Prefix, reader.LocalName);
Console.WriteLine(" The namespace URI is " + reader.NamespaceURI);
}
}
}
reader.Close();
Dim reader As XmlReader = XmlReader.Create("book2.xml")
' Parse the file. If they exist, display the prefix and
' namespace URI of each node.
While reader.Read()
If reader.IsStartElement() Then
If reader.Prefix = String.Empty Then
Console.WriteLine("<{0}>", reader.LocalName)
Else
Console.Write("<{0}:{1}>", reader.Prefix, reader.LocalName)
Console.WriteLine(" The namespace URI is " + reader.NamespaceURI)
End If
End If
End While
reader.Close()
The example uses the file, book2.xml, as input.
<book xmlns:bk='urn:samples'>
<title>Pride And Prejudice</title>
<bk:genre>novel</bk:genre>
</book>
Продукт | Версии |
---|---|
.NET | Core 1.0, Core 1.1, Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9 |
.NET Framework | 1.1, 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1 |
.NET Standard | 1.0, 1.1, 1.2, 1.3, 1.4, 1.6, 2.0, 2.1 |
UWP | 10.0 |
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