XmlTextReader.IsEmptyElement Property

Definition

Gets a value indicating whether the current node is an empty element (for example, <MyElement/>).

public override bool IsEmptyElement { get; }

Property Value

true if the current node is an element (NodeType equals XmlNodeType.Element) that ends with />; otherwise, false.

Examples

The following example displays the text content of each element.

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

public class Sample
{
  public static void Main()
  {
    XmlTextReader reader = null;

    try
    {
       //Load the reader with the XML file.
       reader = new XmlTextReader("elems.xml");

       //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

The example uses the file, elems.xml, as input.


<book>
  <title>Pride And Prejudice</title>
  <price>19.95</price>
  <misc/>
</book>

Remarks

Uwaga

Starting with the .NET Framework 2.0, we recommend that you create XmlReader instances by using the XmlReader.Create method to take advantage of new functionality.

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.

IsEmptyElement simply reports whether or not the element in the source document had an end element tag.

Applies to

Produkt Wersje
.NET Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9, 10
.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

See also