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My.Computer.Registry.ClassesRoot Property 

Returns a RegistryKey type which provides access to HKEY_CLASSES_ROOT.

' Usage
Dim value As Microsoft.Win32.RegistryKey = My.Computer.Registry.ClassesRoot
' Declaration
Public ReadOnly Property ClassesRoot As Microsoft.Win32.RegistryKey


The My.Computer.Registry object offers methods and properties for working with registry keys. See My.Computer.Registry Object for more information.

HKEY_CLASSES_ROOT is primarily used to store information about file associations in Windows.

The RegistryPermission class, which is in the System.Security.Permissions namespace, controls access to registry variables. Registry variables should not be stored in memory locations where code without RegistryPermission can access them. Similarly, when granting permissions, grant only those privileges necessary to get the job done.

Registry permission access values are defined by the RegistryPermissionAccess enumeration. The following table details its members.

Value Description


Create, read, and write access to registry variables.


Create access to registry variables.


No access to registry variables.


Read access to registry variables.


Write access to registry variables.

The following table lists examples of tasks involving the My.Computer.Registry object.

This example gets the names of the subkeys for the ClassesRoot registry key and adds them to ListBox1.

Dim keyList As System.Collections.IEnumerable
keyList = My.Computer.Registry.ClassesRoot.GetSubKeyNames()
For Each keyName As String In keyList

This example requires that you have a ListBox named ListBox1 in your project.

Namespace: Microsoft.VisualBasic.MyServices

Class: RegistryProxy (provides access to Registry)

Assembly: Visual Basic Runtime Library (in Microsoft.VisualBasic.dll)

No permissions are required.