NewGuid Method
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Guid.NewGuid Method

Updated: August 2011

Initializes a new instance of the Guid structure.

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

'Declaration
Public Shared Function NewGuid As Guid

Return Value

Type: System.Guid
A new GUID object.

This is a convenient static method that you can call to get a new Guid.

The chance that the value of the new Guid will be all zeros or equal to any other Guid is very low. You can determine whether a GUID consists of all zeros by comparing it to Guid.Empty.

The following example creates and displays the values of two Guid objects.


' This code example demonstrates the Guid.NewGuid() method.
Imports System

Class Sample
    Public Shared Sub Main() 
        Dim g As Guid
' Create and display the value of two GUIDs.
        g = Guid.NewGuid()
        Console.WriteLine(g)
        Console.WriteLine(Guid.NewGuid())
    End Sub 'Main
End Class 'Sample
'
'This code example produces the following results:
'
'0f8fad5b-d9cb-469f-a165-70867728950e
'7c9e6679-7425-40de-944b-e07fc1f90ae7
'


.NET Framework

Supported in: 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Portable Class Library

Supported in: Portable Class Library

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

Date

History

Reason

August 2011

Expanded the Remarks section.

Customer feedback.

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