RegistryValueOptions Enumeration
Specifies optional behavior when retrieving name/value pairs from a registry key.
This enumeration has a FlagsAttribute attribute that allows a bitwise combination of its member values.
Namespace: Microsoft.Win32
Assembly: mscorlib (in mscorlib.dll)
| Member name | Description | |
|---|---|---|
| None | No optional behavior is specified. | |
| DoNotExpandEnvironmentNames | A value of type RegistryValueKind.ExpandString is retrieved without expanding its embedded environment variables. |
Use the DoNotExpandEnvironmentNames flag with the RegistryKey.GetValue(String, Object, RegistryValueOptions) method overload.
The following code sample creates a test key, adds a value with an embedded environment variable, and retrieves the value in both expanded and unexpanded forms.
using System; using Microsoft.Win32; using Microsoft.VisualBasic; public class Example { public static void Main() { // Delete and recreate the test key. Registry.CurrentUser.DeleteSubKey("RegistryValueOptionsExample", false); RegistryKey rk = Registry.CurrentUser.CreateSubKey("RegistryValueOptionsExample"); // Add a value that contains an environment variable. rk.SetValue("ExpandValue", "The path is %PATH%", RegistryValueKind.ExpandString); // Retrieve the value, first without expanding the environment // variable and then expanding it. Console.WriteLine("Unexpanded: \"{0}\"", rk.GetValue("ExpandValue", "No Value", RegistryValueOptions.DoNotExpandEnvironmentNames)); Console.WriteLine("Expanded: \"{0}\"", rk.GetValue("ExpandValue")); } //Main } //Example
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.
