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RegistryKey.DeleteValue Method (String, Boolean)

Deletes the specified value from this key, and specifies whether an exception is raised if the value is not found.

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

public void DeleteValue(
	string name,
	bool throwOnMissingValue
)

Parameters

name
Type: System.String

The name of the value to delete.

throwOnMissingValue
Type: System.Boolean

Indicates whether an exception should be raised if the specified value cannot be found. If this argument is true and the specified value does not exist, an exception is raised. If this argument is false and the specified value does not exist, no action is taken.

ExceptionCondition
ArgumentException

name is not a valid reference to a value and throwOnMissingValue is true.

-or-

name is null.

SecurityException

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

ObjectDisposedException

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

UnauthorizedAccessException

The RegistryKey being manipulated is read-only.

If throwOnMissingValue is false, there is no way to tell if the deletion was successful, without subsequently trying to access the value just deleted. Therefore, use caution when deleting values from the registry in this manner.

On Windows 95, Windows 98, Windows 98 Second Edition, and Windows Millennium Edition, specifying an empty string for the name parameter does not delete the default value.

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

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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