Esatto.Win32.Registry 3.0.17

Esatto Win32 Registry

Allows use of Registry to store config and preferences via MEDC or wrapper classes.

Microsoft.Extensions.Configuration

Use IConfigurationBuilder.AddRegistry to incorporate values from the registry into MEDC. Keys created under the path specified will be added as values will be added recursively. On non-windows platforms (Linux, MacOS) the call has no effect.

Example registry settings:

Set-ItemProperty -Path "HKLM:\Software\Company Name\Product" -Name "Setting1" -Value "Example value" -Type String

Example use:

var builder = WebApplication.CreateBuilder(args);
builder.Configuration
    .AddRegistry(@"Software\Company Name\Product")
    .AddJsonFile("appsettings.json", optional: true)
    .AddEnvironmentVariables();

var exampleConfig = builder.Configuration.GetSection("Example").Get<ExampleAppSettings>();
Assert.AreEqual("Example value", exampleConfig?.Setting1);

class ExampleAppSettings 
{
    public string? Setting1 { get; set; }
}

Wrapper classes

Inherit from RegistrySettings to create a wrapper class that exposes a key for read/write. Writes are only made to HKCU. Changes are monitored and trigger events. Reads are "live" so setting changes in one app are immediately available in other copies of the app.

Types supported:

Settings are pulled in via first match from:

1. User Group Policy (HKCU\Policies\{Path})
2. Computer Group Policy (HKLM\Policies\{Path})
3. User registry (HKCU\{Path})
4. Computer registry (HKLM\{Path})

Example use:

Console.WriteLine(ExampleSettings.Instance.ReceiptCodeValidityPeriod);
ExampleSettings.Instance.ServerName = "example.com";

internal sealed class ExampleSettings : RegistrySettings
{
    public static ExampleSettings Instance { get; } = new();

    public ExampleSettings()
        : base(@"Company Name\Product Name")
    {
    }

    public int ReceiptCodeValidityPeriod
    {
        get => GetInt(nameof(ReceiptCodeValidityPeriod), 60);
        set => SetInt(nameof(ReceiptCodeValidityPeriod), value);
    }

    public string ServerName
    {
        get => GetString(nameof(ServerName), null);
        set => SetString(nameof(ServerName), value);
    }

    public bool AutoConnect
    {
        get => GetBool(nameof(AutoConnect), false);
        set => SetBool(nameof(AutoConnect), value);
    }

    public string[] RecentDocuments
    {
        get => GetBool(nameof(RecentDocuments), new string[0]);
        set => SetBool(nameof(RecentDocuments), value);
    }
}

Subkeys may be exposed as nested RegistrySettings instances to permit lists / dictionaries.

ADMX Export for Wrapper Classes

Wrapper classes may be exported to admx files for use in Group Policy. Add the nuget package Esatto.Win32.Registry.AdmxExporter to the project containing the wrapper classes. Annotate the settings with [DisplayName("Setting Name")] and other attributes to make things pretty. See AdmxExporter for more details.

<ItemGroup>
    <PackageReference Include="Esatto.Win32.Registry" Version="3.0.5" />
    <PackageReference Include="Esatto.Win32.Registry.AdmxExporter" Version="3.0.5" />
</ItemGroup>

Example appearance in Group Policy Management Center (GPMC):