XmlReader.ReadElementContentAsDouble 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 double-precision floating-point number.

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

Syntax

'Declaration
Public Overridable Function ReadElementContentAsDouble ( _
    localName As String, _
    namespaceURI As String _
) As Double
public virtual double ReadElementContentAsDouble(
    string localName,
    string namespaceURI
)

Parameters

  • namespaceURI
    Type: System.String
    The namespace URI of the element.

Return Value

Type: System.Double
The element content as a double-precision floating-point number.

Exceptions

Exception Condition
InvalidOperationException

The XmlReader is not positioned on an element.

XmlException

The current element contains child elements.

-or-

The element content cannot be converted to the requested type.

ArgumentNullException

The method is called with nulla 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.

Remarks

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.

Version Information

Silverlight

Supported in: 5, 4, 3

Silverlight for Windows Phone

Supported in: Windows Phone OS 7.1, Windows Phone OS 7.0

XNA Framework

Supported in: Xbox 360, Windows Phone OS 7.0

Platforms

For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.