Note
Access to this page requires authorization. You can try signing in or changing directories.
Access to this page requires authorization. You can try changing directories.
Guid.NewGuid Method
Microsoft Silverlight will reach end of support after October 2021. Learn more.
Initializes a new instance of the Guid class.
Namespace: System
Assembly: mscorlib (in mscorlib.dll)
Syntax
'Declaration
<SecuritySafeCriticalAttribute> _
Public Shared Function NewGuid As Guid
[SecuritySafeCriticalAttribute]
public static Guid NewGuid()
Return Value
Type: System.Guid
A new Guid object.
Remarks
This is a convenient static method that you can call to get a new Guid.
There is a very low probability that the value of the new Guid is all zeroes or equal to any other Guid. You can determine whether a GUID consists of all zeros by comparing it to Guid.Empty.
Examples
The following code example creates and displays the values of two Guid objects.
' This code example demonstrates the Guid.NewGuid() method.
Class Example
Public Shared Sub Demo(ByVal outputBlock As System.Windows.Controls.TextBlock)
Dim g As Guid
' Create and display the value of two GUIDs.
g = Guid.NewGuid()
outputBlock.Text &= g.ToString() & vbCrLf
outputBlock.Text &= Guid.NewGuid().ToString() & vbCrLf
End Sub
End Class
'
'This code example produces the following results:
'
'0f8fad5b-d9cb-469f-a165-70867728950e
'7c9e6679-7425-40de-944b-e07fc1f90ae7
'
// This code example demonstrates the Guid.NewGuid() method.
using System;
class Example
{
public static void Demo(System.Windows.Controls.TextBlock outputBlock)
{
Guid g;
// Create and display the value of two GUIDs.
g = Guid.NewGuid();
outputBlock.Text += g + "\n";
outputBlock.Text += Guid.NewGuid() + "\n";
}
}
/*
This code example produces the following results:
0f8fad5b-d9cb-469f-a165-70867728950e
7c9e6679-7425-40de-944b-e07fc1f90ae7
*/
Version Information
Silverlight
Supported in: 5, 4, 3
Silverlight for Windows Phone
Supported in: Windows Phone OS 7.1, Windows Phone OS 7.0
XNA Framework
Supported in: Xbox 360, Windows Phone OS 7.0
Platforms
For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.