Nullable<T>.Explicit(Nullable<T> to T) Operator

Reference

Definition

Namespace:: System

Assembly:: System.Runtime.dll

Assembly:: mscorlib.dll

Assembly:: netstandard.dll

Source:: Nullable.cs

Source:: Nullable.cs

Source:: Nullable.cs

Important

Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.

Defines an explicit conversion of a Nullable<T> instance to its underlying value.

public:
 static explicit operator T(Nullable<T> value);

public static explicit operator T (T? value);

static member op_Explicit : Nullable<'T (requires 'T : struct)> -> 'T

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

Parameters

value: Nullable<T>

A nullable value.

Returns

The value of the Value property for the value parameter.

Examples

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

using System;

public class Example
{
   public static void Main()
   {
       var nullInt = new Nullable<int>(172);
       // Convert with CInt conversion method.
       Console.WriteLine((int)nullInt);
       // Convert with Convert.ChangeType.
       Console.WriteLine(Convert.ChangeType(nullInt, typeof(int)));
   }
}
// The example displays the following output:
//       172
//       172

open System

let nullInt = Nullable 172
// Convert with int conversion function.
printfn $"{int nullInt}"
// Convert with Convert.ChangeType.
printfn $"{Convert.ChangeType(nullInt, typeof<int>)}"
// The example displays the following output:
//       172
//       172

Module Example
   Public Sub Main()
       Dim nullInt = New Nullable(Of Integer)(172)
       ' Convert with CInt conversion method.
       Console.WriteLine(CInt(nullInt))
       ' 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

Remarks

This operator supports the explicit conversion of the current Nullable<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 equivalent method for this operator is Nullable<T>.Value

Applies to

Jagamisviis: