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Nullable(Of T)Narrowing Conversion (Nullable(Of T) to T)


Defines an explicit conversion of a Nullable(Of T) instance to its underlying value.

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

Public Shared Narrowing Operator CType (
	value As Nullable(Of T)
) As T


Type: System.Nullable(Of T)

A nullable value.

Return Value

Type: T

The value of the Value property for the value parameter.

This operator supports the explicit conversion of the current Nullable(Of T) instance to type T, the type of Value. The syntax for such explicit conversions is language-dependent. You may also be able to perform the conversion by calling the Convert.ChangeType method.

The Narrowing(Nullable(Of T) to T) operator enables code such as the following, which converts a Nullable(Of Int32) value to an Int32 value.

Module Example
   Public Sub Main()
       Dim nullInt = New Nullable(Of Integer)(172)
       ' Convert with CInt conversion method.
       ' Convert with CType conversion method.
       Console.WriteLine(CType(nullInt, Integer))
       ' Convert with Convert.ChangeType.
       Console.WriteLine(Convert.ChangeType(nullInt, GetType(Integer)))
   End Sub
End Module
' The example displays the following output:
'       172
'       172
'       172

Universal Windows Platform
Available since 4.5
.NET Framework
Available since 2.0
Portable Class Library
Supported in: portable .NET platforms
Available since 2.0
Windows Phone Silverlight
Available since 7.0
Windows Phone
Available since 8.1
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