ReadElementContentAsLong Method
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XmlReader.ReadElementContentAsLong Method

Reads the current element and returns the contents as a 64-bit signed integer.

Namespace:  System.Xml
Assembly:  System.Xml (in System.Xml.dll)

public virtual long ReadElementContentAsLong()

Return Value

Type: System.Int64
The element content as a 64-bit signed integer.


The XmlReader is not positioned on an element.


The current element contains child elements.


The element content cannot be converted to a 64-bit signed integer.


The method is called with null arguments.

This method reads the start tag, the contents of the element, and moves the reader past the end element tag. It expands entities and ignores processing instructions and comments. The element can only contain simple content. That is, it cannot have child elements.

If the content is typed xsd:long, the reader returns an unboxed 64-bit signed integer. If the content is not typed xsd:long, the reader attempts to convert it to a 64-bit signed integer according to the rules defined by the W3C XML Schema Part 2: Datatypes recommendation.

For more information, see Reading Typed Data.

The following example uses the ReadElementContentAsLong method to read the content of the longValue element.

using (XmlReader reader = XmlReader.Create("dataFile.xml")) {
     long number = reader.ReadElementContentAsLong();
     // Do some processing with the number object.

The example uses the dataFile.xml file as input.

     <?some pi?>
      text value of the element.

.NET Framework

Supported in: 4, 3.5, 3.0, 2.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Portable Class Library

Supported in: Portable Class Library

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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