Explicit Conversion (XElement to Nullable(UInt64))

XElement Narrowing Conversion (XElement to Nullable(Of UInt64))

[ This article is for Windows Phone 8 developers. If you’re developing for Windows 10, see the latest documentation. ]

Cast the value of this XElement to a Nullable(Of T) of UInt64.

This API is not CLS-compliant. 

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

'Declaration
Public Shared Narrowing Operator CType ( _
	element As XElement _
) As Nullable(Of ULong)

Parameters

element
Type: System.Xml.Linq.XElement
The XElement to cast to Nullable(Of T) of UInt64.

Return Value

Type: System.Nullable(Of UInt64)
A Nullable(Of T) of UInt64 that contains the content of this XElement.

ExceptionCondition
FormatException

The element does not contain a valid UInt64 value.

The following example creates an element with unsigned long integer content. It then retrieves the value by casting to Nullable(Of T) of UInt64.

Dim root As XElement = _ 
        <Root>
            <Value>9223372036854775807</Value>
        </Root>

Dim value As Nullable(Of ULong) = CType(root.Element("Value"), Nullable(Of ULong))

Windows Phone OS

Supported in: 8.1, 8.0, 7.1, 7.0

Windows Phone

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