RegistryKey.DeleteValue Method (String)

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.

This code example is part of a larger example provided for the RegistryKey class.

using(RegistryKey 
    testSettings = test9999.OpenSubKey("TestSettings", true))
{
    // Delete the ID value.
    testSettings.DeleteValue("id");

    // Verify the deletion.
    Console.WriteLine((string)testSettings.GetValue(
        "id", "ID not found."));
}

.NET Framework

.NET Framework Client Profile

• RegistryPermission  

  for the ability to delete the specified registry key. Associated enumerations: RegistryPermissionAccess.Write

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

Reference