XmlNodeReader.IsEmptyElement Property
Important
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Gets a value indicating whether the current node is an empty element (for example, <MyElement/>
).
public:
virtual property bool IsEmptyElement { bool get(); };
public override bool IsEmptyElement { get; }
member this.IsEmptyElement : bool
Public Overrides ReadOnly Property IsEmptyElement As Boolean
true
if the current node is an element (NodeType equals XmlNodeType.Element
) and it ends with />
; otherwise, false
.
The following example displays the text content of each element.
#using <System.Xml.dll>
using namespace System;
using namespace System::IO;
using namespace System::Xml;
int main()
{
XmlNodeReader^ reader = nullptr;
try
{
//Create and load the XML document.
XmlDocument^ doc = gcnew XmlDocument;
doc->LoadXml( "<book>"
"<title>Pride And Prejudice</title>"
"<price>19.95</price>"
"<misc/>"
"</book>" );
//Load the XmlNodeReader
reader = gcnew XmlNodeReader( doc );
//Parse the XML and display the text content of each of the elements.
while ( reader->Read() )
{
if ( reader->IsStartElement() )
{
if ( reader->IsEmptyElement )
Console::WriteLine( "<{0}/>", reader->Name );
else
{
Console::Write( "<{0}> ", reader->Name );
reader->Read(); //Read the start tag.
if ( reader->IsStartElement() )
//Handle nested elements.
Console::Write( "\r\n<{0}>", reader->Name );
Console::WriteLine( reader->ReadString() ); //Read the text content of the element.
}
}
}
}
finally
{
if ( reader != nullptr )
reader->Close();
}
}
using System;
using System.IO;
using System.Xml;
public class Sample
{
public static void Main()
{
XmlNodeReader reader = null;
try
{
//Create and load the XML document.
XmlDocument doc = new XmlDocument();
doc.LoadXml("<book>" +
"<title>Pride And Prejudice</title>" +
"<price>19.95</price>" +
"<misc/>" +
"</book>");
//Load the XmlNodeReader
reader = new XmlNodeReader(doc);
//Parse the XML and display the text content of each of the elements.
while (reader.Read()){
if (reader.IsStartElement()){
if (reader.IsEmptyElement)
{
Console.WriteLine("<{0}/>", reader.Name);
}
else
{
Console.Write("<{0}> ", reader.Name);
reader.Read(); //Read the start tag.
if (reader.IsStartElement()) //Handle nested elements.
Console.Write("\r\n<{0}>", reader.Name);
Console.WriteLine(reader.ReadString()); //Read the text content of the element.
}
}
}
}
finally
{
if (reader != null)
reader.Close();
}
}
} // End class
Option Strict
Option Explicit
Imports System.IO
Imports System.Xml
Public Class Sample
Public Shared Sub Main()
Dim reader As XmlNodeReader = Nothing
Try
'Create and load the XML document.
Dim doc As New XmlDocument()
doc.LoadXml("<book>" & _
"<title>Pride And Prejudice</title>" & _
"<price>19.95</price>" & _
"<misc/>" & _
"</book>")
'Load the XmlNodeReader
reader = New XmlNodeReader(doc)
'Parse the XML and display the text content of each of the elements.
While reader.Read()
If reader.IsStartElement() Then
If reader.IsEmptyElement Then
Console.WriteLine("<{0}/>", reader.Name)
Else
Console.Write("<{0}> ", reader.Name)
reader.Read() 'Read the start tag.
If (reader.IsStartElement()) 'Handle nested elements.
Console.WriteLine()
Console.Write("<{0}>", reader.Name)
End If
Console.WriteLine(reader.ReadString()) 'Read the text content of the element.
End If
End If
End While
Finally
If Not (reader Is Nothing) Then
reader.Close()
End If
End Try
End Sub
End Class
Note
In the .NET Framework 2.0, the recommended practice is to create XmlReader instances using the XmlReaderSettings class and the Create method. This allows you to take full advantage of all the new features introduced in the .NET Framework. For more information, see the Remarks section in the XmlReader reference page.
This property enables you to determine the difference between the following:
<item num="123"/>
(IsEmptyElement
is true
).
<item num="123">
(IsEmptyElement
is false
, although element content is empty).
A corresponding EndElement
node is not generated for empty elements.
Product | Versions |
---|---|
.NET | 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 | 2.0, 2.1 |
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