XmlElement.IsEmpty Property

Reference

Definition

Namespace:: System.Xml

Assemblies:: System.Xml.dll, System.Xml.XmlDocument.dll

Assembly:: System.Xml.ReaderWriter.dll

Assembly:: System.Xml.XmlDocument.dll

Assembly:: System.Xml.dll

Assembly:: netstandard.dll

Source:: XmlElement.cs

Source:: XmlElement.cs

Source:: XmlElement.cs

Important

Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.

Gets or sets the tag format of the element.

public:
 property bool IsEmpty { bool get(); void set(bool value); };

public bool IsEmpty { get; set; }

member this.IsEmpty : bool with get, set

Public Property IsEmpty As Boolean

Property Value

Boolean

true if the element is to be serialized in the short tag format "<item/>"; false for the long format "<item></item>".

When setting this property, if set to true, the children of the element are removed and the element is serialized in the short tag format. If set to false, the value of the property is changed (regardless of whether or not the element has content); if the element is empty, it is serialized in the long format.

This property is a Microsoft extension to the Document Object Model (DOM).

Examples

The following example adds content to an empty element.

#using <System.Xml.dll>

using namespace System;
using namespace System::Xml;
int main()
{
   XmlDocument^ doc = gcnew XmlDocument;
   doc->LoadXml( "<book>  <title>Pride And Prejudice</title>  <price/></book>" );
   XmlElement^ currNode = dynamic_cast<XmlElement^>(doc->DocumentElement->LastChild);
   if ( currNode->IsEmpty )
      currNode->InnerXml = "19.95";

   Console::WriteLine( "Display the modified XML..." );
   Console::WriteLine( doc->OuterXml );
}

using System;
using System.Xml;

public class Sample {

  public static void Main() {

      XmlDocument doc = new XmlDocument();
      doc.LoadXml("<book>"+
                  "  <title>Pride And Prejudice</title>" +
                  "  <price/>" +
                  "</book>");

      XmlElement currNode = (XmlElement) doc.DocumentElement.LastChild;
      if (currNode.IsEmpty)
        currNode.InnerXml="19.95";

      Console.WriteLine("Display the modified XML...");
      Console.WriteLine(doc.OuterXml);
  }
}

 Imports System.Xml

public class Sample

  public shared sub Main()
  
      Dim doc as XmlDocument = new XmlDocument()
      doc.LoadXml("<book>" & _
                  "  <title>Pride And Prejudice</title>" & _
                  "  <price/>" & _
                  "</book>")   

      Dim currNode as XmlElement 
      currNode = CType (doc.DocumentElement.LastChild, XmlElement)
      if (currNode.IsEmpty)
        currNode.InnerXml="19.95"
      end if

      Console.WriteLine("Display the modified XML...")
      Console.WriteLine(doc.OuterXml)

  end sub
end class

Remarks

This property is a Microsoft extension of the Document Object Model (DOM).

Applies to

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