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Explicit Conversion (XElement to Nullable(TimeSpan))

XElement Narrowing Conversion (XElement to Nullable(Of TimeSpan))

Cast the value of this XElement to a Nullable(Of T) of TimeSpan.

This API is not CLS-compliant. 

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

Public Shared Narrowing Operator CType ( _
	element As XElement _
) As Nullable(Of TimeSpan)


Type: System.Xml.Linq.XElement
The XElement to cast to Nullable(Of T) of TimeSpan.

Return Value

Type: System.Nullable(Of TimeSpan)
A Nullable(Of T) of TimeSpan that contains the content of this XElement.


The element does not contain a valid TimeSpan value.

The value space of an attribute or element that contains time span content is closely related to duration content as described in ISO 8601. When creating an attribute or element that contains time span content, the attribute or element values are formatted per the W3C specification. For more information, see the NOTE-datetime W3C specification.

Behavior is lax when casting to a Nullable(Of T) of TimeSpan from an attribute or element. Even if the attribute or element value is not formatted exactly per the W3C specification, the value is appropriately converted to a Nullable(Of T) of TimeSpan.

The following example creates an element with time span content. It then retrieves the value by casting to Nullable(Of T) of TimeSpan.

Dim root As XElement = _
        <Value><%= New TimeSpan(1, 5, 30) %></Value>
Dim value As Nullable(Of TimeSpan) = CType(root.Element("Value"), Nullable(Of TimeSpan))


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

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

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