Missing Class
.NET Framework 2.0
Represents a missing Object. This class cannot be inherited.
Namespace: System.Reflection
Assembly: mscorlib (in mscorlib.dll)
Assembly: mscorlib (in mscorlib.dll)
'Declaration <SerializableAttribute> _ <ComVisibleAttribute(True)> _ Public NotInheritable Class Missing Implements ISerializable 'Usage Dim instance As Missing
/** @attribute SerializableAttribute() */ /** @attribute ComVisibleAttribute(true) */ public final class Missing implements ISerializable
SerializableAttribute ComVisibleAttribute(true) public final class Missing implements ISerializable
The following example shows a use of Missing to invoke a method with a default argument.
Imports System Imports System.Reflection Imports Microsoft.VisualBasic Public Class MissingSample Shared Sub Main() 'To invoke MyMethod with a default argument, use the following syntax: GetType(MissingSample).GetMethod("MyMethod").Invoke(Nothing, New Object() {Missing.Value}) End Sub Shared Function MyMethod(Optional k As Integer = 33) As Integer Console.WriteLine("k = " & k.ToString()) Return 0 End Function End Class
Windows 98, Windows 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.
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