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XmlReader.ReadContentAsFloat Method

Note: This method is new in the .NET Framework version 2.0.

Reads the text content at the current position as a single-precision floating point number.

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

public virtual float ReadContentAsFloat ()
public float ReadContentAsFloat ()
public function ReadContentAsFloat () : float

Return Value

The text content at the current position as a single-precision floating point number.
Exception typeCondition

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:float, the reader returns an unboxed a single-precision floating point number. If the content is not typed xsd:float, the reader attempts to convert it to a single-precision floating point number according to the rules defined by the W3C XML Schema Part 2: Datatypes recommendation (http://www.w3.org/TR/xmlschema-2/).

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 (http://www.w3.org/TR/xmlschema-2/).

Windows 98, Windows 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

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

.NET Framework

Supported in: 2.0

.NET Compact Framework

Supported in: 2.0
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