Explicit Conversion (XElement to Nullable(Single))

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

[ 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 Single.

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 Single)

Parameters

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

Return Value

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

ExceptionCondition
FormatException

The element does not contain a valid Single value.

The following example creates an element with single precision floating point content. It then retrieves the value by casting to Nullable(Of T) of Single.


Dim output As New StringBuilder
Dim root As XElement = _
        <Root>
            <Value>3.402823e38</Value>
        </Root>
Dim value As Nullable(Of Single) = CType(root.Element("Value"), Nullable(Of Single))
output.Append(String.Format("Nullable Single: value={0}", If(value.HasValue, _
    value.ToString(), "null")))
output.Append(Environment.NewLine)
OutputTextBlock.Text = output.ToString()


Windows Phone OS

Supported in: 8.1, 8.0, 7.1, 7.0

Windows Phone

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