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RegistryKey.OpenBaseKey Method

Opens a new RegistryKey that represents the requested key on the local machine with the specified view.

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

public static RegistryKey OpenBaseKey(
	RegistryHive hKey,
	RegistryView view


Type: Microsoft.Win32.RegistryHive

The HKEY to open.

Type: Microsoft.Win32.RegistryView

The registry view to use.

Return Value

Type: Microsoft.Win32.RegistryKey
The requested registry key.


hKey or view is invalid.


The user does not have the necessary registry rights.


The user does not have the permissions required to perform this action.

.NET Framework

Supported in: 4.5, 4

.NET Framework Client Profile

Supported in: 4

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

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

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