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RegistryKey.DeleteSubKey Method (String)

Deletes the specified subkey.

Namespace:  Microsoft.Win32
Assembly:  mscorlib (in mscorlib.dll)

Public Sub DeleteSubKey ( _
	subkey As String _


Type: System.String
The name of the subkey to delete. This string is not case-sensitive.


The subkey has child subkeys


The subkey parameter does not specify a valid registry key


subkey is Nothing


The user does not have the permissions required to delete the key.


The RegistryKey being manipulated is closed (closed keys cannot be accessed).


The user does not have the necessary registry rights.

To delete child subkeys, use DeleteSubKeyTree.

Use caution when deleting registry keys.

The following example demonstrates how to use DeleteSubKey.

Imports System
Imports Microsoft.Win32

Public Class RegKeyDel
    Public Shared Sub Main()
        ' Create a subkey named Test9999 under HKEY_CURRENT_USER.
        Dim test9999 As RegistryKey = _
        ' Create two subkeys under HKEY_CURRENT_USER\Test9999. The
        ' keys are disposed when execution exits the using statement.
        Dim testName As RegistryKey = test9999.CreateSubKey("TestName")
        Dim testSettings As RegistryKey = test9999.CreateSubKey("TestSettings")

        ' Create data for the TestSettings subkey.
        testSettings.SetValue("Language", "French")
        testSettings.SetValue("Level", "Intermediate")
        testSettings.SetValue("ID", 123)

        ' delete the subkey "TestName"
        ' delete everything under and including "Test9999"
    End Sub
End Class

.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

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.