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XmlReader.ReadContentAsBoolean Method

Reads the text content at the current position as a Boolean.

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

abstract ReadContentAsBoolean : unit -> bool 
override ReadContentAsBoolean : unit -> bool 

Return Value

Type: System.Boolean
The text content as a Boolean object.

ExceptionCondition
InvalidCastException

The attempted cast is not valid.

FormatException

The string format is not valid.

This method concatenates text, white space, significant white space, and CDATA sections, and skips any comments or processing instructions. Entity references are automatically resolved.

If the content is typed xsd:boolean, the reader returns an unboxed Boolean object. If the content is not typed xsd:boolean, the reader attempts to convert it to a Boolean object according to the rules defined by the W3C XML Schema Part 2: Datatypes recommendation.

The following table describes how this method treats each node type.

XmlNodeType

Return value

Reader behavior

Text

CDATA

Whitespace

SignificantWhitespace

EntityReference

EndEntity

Concatenated content of text, CDATA, white space and significant white space nodes converted to the requested type.

Moves to the next start element or end element tag. Entity references are automatically expanded.

Attribute

Same as calling XmlConvert.ToXxx on the attribute value.

The reader remains in the current position.

Comment

ProcessingInstruction

Ignores the processing instruction (PI) or comment and reads the concatenated text content that follows the PI or comment.

Moves to the next start element or end element tag. Entity references are automatically expanded.

EndElement

An empty string.

The reader remains in the current position.

Element

XmlDeclaration

None

Document

DocumentType

Notation

Entity

DocumentFragment

An InvalidOperationException is thrown.

Undefined, although typically the reader remains in the current position.

For more information, see Reading Typed Data and the W3C XML Schema Part 2: Datatypes recommendation.

The following example uses the ReadContentAsBoolean method to read the attribute as a Boolean value.

No code example is currently available or this language may not be supported.

The example uses the dataFile_2.xml file as input.


<root>
  <item sale-item='true' productID='123456' colors='blue green black'>
    <price>9.95</price>
  </item>
  <item sale-item='false' productID='124390'>
    <price>5.95</price>
  </item>
  <item sale-item='true' productID='53298'>
    <price>12.95</price>
  </item>
</root>


.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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