Export (0) Print
Expand All

XmlReader.ReadElementContentAsFloat Method (String, String)

Checks that the specified local name and namespace URI matches that of the current element, then reads the current element and returns the contents as a single-precision floating-point number.

Namespace:  System.Xml
Assemblies:   System.Xml (in System.Xml.dll)
  System.Xml.ReaderWriter (in System.Xml.ReaderWriter.dll)

abstract ReadElementContentAsFloat : 
        localName:string * 
        namespaceURI:string -> float32  
override ReadElementContentAsFloat : 
        localName:string * 
        namespaceURI:string -> float32

Parameters

localName
Type: System.String

The local name of the element.

namespaceURI
Type: System.String

The namespace URI of the element.

Return Value

Type: System.Single
The element content as a single-precision floating point number.

ExceptionCondition
InvalidOperationException

The XmlReader is not positioned on an element.

XmlException

The current element contains child elements.

-or-

The element content cannot be converted to a single-precision floating-point number.

ArgumentNullException

The method is called with a null reference (Nothing in Visual Basic) arguments.

ArgumentException

The specified local name and namespace URI do not match that of the current element being read.

InvalidOperationException

An XmlReader method was called before a previous asynchronous operation finished. In this case, InvalidOperationException is thrown with the message “An asynchronous operation is already in progress.”

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.

The reader attempts to convert the element content to a single-precision floating point number according to the rules defined by the W3C XML Schema Part 2: Datatypes recommendation.

For more information, see the Remarks section of the XmlReader reference page.

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

XNA Framework

Supported in: 3.0, 2.0, 1.0

Portable Class Library

Supported in: Portable Class Library

Supported in: Windows Phone 8.1

Supported in: Windows Phone Silverlight 8.1

Supported in: Windows Phone Silverlight 8
Show:
© 2015 Microsoft