This example deletes the value for "Name", from the current user's registry, under the key "Names".

Example

Dim key As Microsoft.Win32.RegistryKey
key = Microsoft.Win32.Registry.CurrentUser.OpenSubKey("Names", True)
key.DeleteValue("Name")

Compiling the Code

Replace the "Names" parameter with the name of a key that exists directly under the HKEY_CURRENT_USER node of the registry.

Replace the "Name" parameter with the name of a value that exists directly under the "Names" node.

Changing the True parameter to False makes the key read-only, and you will not be able to delete it using the key variable.

Robust Programming

When reading the registry from a Web application, the current user depends on the authentication and impersonation implemented in the Web application. To determine the current user in a Web application, see Code: Getting the User or Account Identity (Visual Basic).

The following conditions may cause an exception:

• The name of the key or the name of the value is Nothing (ArgumentNullException Class).
• The user does not have permissions to delete registry values (SecurityException Class).
• The key name exceeds the 255-character limit (ArgumentException Class).
• The key is closed (IOException Class).
• The registry key is read-only (UnauthorizedAccessException Class).

See Also

Code: Creating a Key In the Registry (Visual Basic) | Code: Reading Data from the Registry (Visual Basic) | Registry Class | RegistryKey Class | Code Access Security Basics | Visual Basic Code Example Topics