optionsbuilder scoped example

Author: andrewlock

OptionsBuilderScopedDependencies/OptionsBuilderScopedDependencies.csproj

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+<Project Sdk="Microsoft.NET.Sdk.Web">
+
+  <PropertyGroup>
+    <TargetFramework>net7.0</TargetFramework>
+    <Nullable>enable</Nullable>
+    <ImplicitUsings>enable</ImplicitUsings>
+  </PropertyGroup>
+
+</Project>

OptionsBuilderScopedDependencies/Program.cs

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+using Microsoft.Extensions.Options;
+
+var builder = WebApplication.CreateBuilder(args);
+
+builder.Services.AddOptions<MySettings>()
+    .Configure<IServiceProvider>((opts, provider) => 
+    {
+        using var scope = provider.CreateScope();
+        var service = scope.ServiceProvider.GetRequiredService<ValueService>();
+        opts.MyValue = service.GetValue();
+    });
+
+builder.Services.AddScoped<ValueService>();
+
+var app = builder.Build();
+
+app.MapGet("/", (IOptionsSnapshot<MySettings> settings, ValueService service) => new {
+    mySettings = settings.Value.MyValue,
+    service = service.GetValue(),
+});
+
+app.Run();
+
+public class ValueService
+{
+    private readonly Guid _val = Guid.NewGuid();
+
+    // Return a fixed Guid for the lifetime of the service
+    public Guid GetValue() => _val;
+}
+
+public class MySettings
+{
+    public Guid MyValue { get; set; }
+}

OptionsBuilderScopedDependencies/Properties/launchSettings.json

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+{
+  "iisSettings": {
+    "windowsAuthentication": false,
+    "anonymousAuthentication": true,
+    "iisExpress": {
+      "applicationUrl": "http://localhost:41318",
+      "sslPort": 44306
+    }
+  },
+  "profiles": {
+    "http": {
+      "commandName": "Project",
+      "dotnetRunMessages": true,
+      "launchBrowser": true,
+      "applicationUrl": "http://localhost:5284",
+      "environmentVariables": {
+        "ASPNETCORE_ENVIRONMENT": "Development"
+      }
+    },
+    "https": {
+      "commandName": "Project",
+      "dotnetRunMessages": true,
+      "launchBrowser": true,
+      "applicationUrl": "https://localhost:7209;http://localhost:5284",
+      "environmentVariables": {
+        "ASPNETCORE_ENVIRONMENT": "Development"
+      }
+    },
+    "IIS Express": {
+      "commandName": "IISExpress",
+      "launchBrowser": true,
+      "environmentVariables": {
+        "ASPNETCORE_ENVIRONMENT": "Development"
+      }
+    }
+  }
+}

OptionsBuilderScopedDependencies/appsettings.Development.json

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+{
+  "Logging": {
+    "LogLevel": {
+      "Default": "Information",
+      "Microsoft.AspNetCore": "Warning"
+    }
+  }
+}

OptionsBuilderScopedDependencies/appsettings.json

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+{
+  "Logging": {
+    "LogLevel": {
+      "Default": "Information",
+      "Microsoft.AspNetCore": "Warning"
+    }
+  },
+  "AllowedHosts": "*"
+}