ConfigCat.Extensions.Hosting 10.0.0

.NET 8.0 This package targets .NET 8.0. The package is compatible with this framework or higher. .NET Standard 2.0 This package targets .NET Standard 2.0. The package is compatible with this framework or higher. .NET Framework 4.6.2 This package targets .NET Framework 4.6.2. The package is compatible with this framework or higher. 
dotnet add package ConfigCat.Extensions.Hosting --version 10.0.0
                    


                    

                
NuGet\Install-Package ConfigCat.Extensions.Hosting -Version 10.0.0
This command is intended to be used within the Package Manager Console in Visual Studio, as it uses the NuGet module's version of Install-Package. 
<PackageReference Include="ConfigCat.Extensions.Hosting" Version="10.0.0" />
For projects that support PackageReference, copy this XML node into the project file to reference the package. 
<PackageVersion Include="ConfigCat.Extensions.Hosting" Version="10.0.0" />
                    


                            Directory.Packages.props
                        

                    

                
<PackageReference Include="ConfigCat.Extensions.Hosting" />
                    


                            Project file
For projects that support Central Package Management (CPM), copy this XML node into the solution Directory.Packages.props file to version the package. 
paket add ConfigCat.Extensions.Hosting --version 10.0.0
                    


                    

                
#r "nuget: ConfigCat.Extensions.Hosting, 10.0.0"
#r directive can be used in F# Interactive and Polyglot Notebooks. Copy this into the interactive tool or source code of the script to reference the package. 
#:package ConfigCat.Extensions.Hosting@10.0.0
#:package directive can be used in C# file-based apps starting in .NET 10 preview 4. Copy this into a .cs file before any lines of code to reference the package. 
#addin nuget:?package=ConfigCat.Extensions.Hosting&version=10.0.0
                    


                            Install as a Cake Addin
                        

                    

                
#tool nuget:?package=ConfigCat.Extensions.Hosting&version=10.0.0
                    


                            Install as a Cake Tool

ConfigCat SDK for .NET

Build status NuGet Version Sonar Coverage Quality Gate Status License: MIT

ConfigCat SDK for .NET provides easy integration for your application to ConfigCat.

Supported runtimes

  • .NET 6+
  • .NET Framework 4.6.2+
  • Other runtimes which implement .NET Standard 2.0+ like .NET Core 2.0+, Xamarin.Android 8.0+, Xamarin.iOS 10.14+, etc. (For more details, see the Platform compatiblity section below.)

Getting started

1. Install the package with NuGet

The core package, which works across all supported .NET applications, can be installed as follows:

dotnet add package ConfigCat.Client

or

Install-Package ConfigCat.Client

For ASP.NET Core applications and other modern .NET applications built on .NET Generic Host (Microsoft.Extensions.Hosting) or .NET's standard dependency injection (Microsoft.Extensions.DependencyInjection), it's recommended to install the integration package:

dotnet add package ConfigCat.Extensions.Hosting

or

Install-Package ConfigCat.Extensions.Hosting

For Unity, see the instructions here.

2. Import ConfigCat namespaces to your application

If using the core package:

using ConfigCat.Client;

If using the integration package:

using ConfigCat.Client;
using ConfigCat.Extensions.Hosting;

3. Go to the <a href="https://app.configcat.com/sdkkey" target="_blank">ConfigCat Dashboard</a> to get your SDK Key:

SDK-KEY

4. Obtain a ConfigCat client instance:

If using the core package:

var client = ConfigCatClient.Get("#YOUR-SDK-KEY#");

You can acquire singleton client instances for your SDK keys using the ConfigCatClient.Get(sdkKey: <sdkKey>) static factory method. (However, please keep in mind that subsequent calls to ConfigCatClient.Get() with the same SDK Key return a shared client instance, which was set up by the first call.)

If using the integration package:

  1. First, configure your application host or DI services:

    • If your application uses the modern, linear, property-based configuration style:

      var configCatBuilder = builder.UseConfigCat();
configCatBuilder.AddDefaultClient(options =>
{
    options.SdkKey = "#YOUR-SDK-KEY#";
});

    • If your application uses the traditional, callback-based approach:

      builder.ConfigureConfigCat(configCatBuilder =>
{
    configCatBuilder.AddDefaultClient(options =>
    {
        options.SdkKey = "#YOUR-SDK-KEY#";
    });
});

    • If your application performs setup via a host builder not compatible with .NET Generic Host or manually builds a DI container using ServiceCollection:

      services.AddConfigCat(configCatBuilder =>
{
    configCatBuilder.AddDefaultClient(options =>
    {
        options.SdkKey = "#YOUR-SDK-KEY#";
    });
});

  2. Build the application host or DI container.

  3. Finally, resolve the singleton IConfigCatClient service from the DI container via constructor injection, method injection, etc., or by ServiceProvider.GetRequiredService<IConfigCatClient>(). E.g.:

    var client = app.Services.GetRequiredService<IConfigCatClient>();

5. Get your setting value:

var isMyAwesomeFeatureEnabled = await client.GetValueAsync("isMyAwesomeFeatureEnabled", false);

if (isMyAwesomeFeatureEnabled)
{
    doTheNewThing();
}
else
{
    doTheOldThing();
}

6. On application exit:

If using the core package:

client.Dispose();

To ensure graceful shutdown of the client, you should invoke the Dispose() method. (The client implements the IDisposable interface.) Alternatively, you can close all open clients at once using the ConfigCatClient.DisposeAll() method.

If using the integration package:

You don't need to explicitly dispose of the resolved IConfigCatClient service. It will be automatically disposed when the application host or DI container is disposed.

Getting user-specific setting values with targeting

This feature allows you to get different setting values for different users in your application by passing a User Object to GetValueAsync().

Read more about targeting here.

var currentUser = new User("#USER-IDENTIFIER#");

var isMyAwesomeFeatureEnabled = await client.GetValueAsync(
	"isMyAwesomeFeatureEnabled",
	defaultValue: false,
	user: currentUser);

Sample/demo apps

Polling modes

The ConfigCat SDK supports 3 different polling strategies to fetch feature flags and settings from the ConfigCat CDN. Once the latest data is downloaded, it is stored in the cache, then the SDK uses the cached data to evaluate feature flags and settings. Read more about polling modes and how to use them at ConfigCat Docs.

Platform compatibility

The ConfigCat SDK supports all the widespread .NET JIT runtimes, everything that implements .NET Standard 2.0+ and supports TLS 1.2 should work. Starting with v9.3.0, it can also be used in applications that employ trimmed self-contained or various ahead-of-time (AOT) compilation deployment models.

Based on our tests, the SDK is compatible with the following runtimes/deployment models:

  • .NET Framework 4.6.2+ (including Ngen)
  • .NET Core 2.0+, .NET 5+ (including Crossgen2/ReadyToRun and Native AOT)
  • Mono 5.10+
  • .NET for Android (formerly known as Xamarin.Android)
  • .NET for iOS (formerly known as Xamarin.iOS)
  • Unity 2021.3+ (Mono JIT)
  • Unity 2021.3+ (IL2CPP)<sup><small>*</small></sup>
  • Universal Windows Platform 10.0.16299.0+ (.NET Native)<sup><small>**</small></sup>
  • WebAssembly (Mono AOT/Emscripten, also known as wasm-tools)

<sup><small>*</small></sup>Unity WebGL also works but needs a bit of extra effort: you will need to enable WebGL compatibility by calling the ConfigCatClient.PlatformCompatibilityOptions.EnableUnityWebGLCompatibility method. For more details, see Sample Scripts.<br/> <sup><small>**</small></sup>To make the SDK work in Release builds on UWP, you will need to add <Namespace Name="System.Text.Json.Serialization.Converters" Browse="Required All"/> to your application's .rd.xml file. See also this discussion.

We strive to provide an extensive support for the various .NET runtimes and versions. If you still encounter an issue with the SDK on some platform, please open a GitHub issue or contact support.

Need help?

https://configcat.com/support

Contributing

Contributions are welcome. For more info please read the Contribution Guideline.

About ConfigCat

ConfigCat is a feature flag and configuration management service that lets you separate releases from deployments. You can turn your features ON/OFF using <a href="https://app.configcat.com" target="_blank">ConfigCat Dashboard</a> even after they are deployed. ConfigCat lets you target specific groups of users based on region, email or any other custom user attribute.

ConfigCat is a <a href="https://configcat.com" target="_blank">hosted feature flag service</a>. Manage feature toggles across frontend, backend, mobile, desktop apps. <a href="https://configcat.com" target="_blank">Alternative to LaunchDarkly</a>. Management app + feature flag SDKs.

Product Compatible and additional computed target framework versions.
.NET net5.0 was computed.  net5.0-windows was computed.  net6.0 was computed.  net6.0-android was computed.  net6.0-ios was computed.  net6.0-maccatalyst was computed.  net6.0-macos was computed.  net6.0-tvos was computed.  net6.0-windows was computed.  net7.0 was computed.  net7.0-android was computed.  net7.0-ios was computed.  net7.0-maccatalyst was computed.  net7.0-macos was computed.  net7.0-tvos was computed.  net7.0-windows was computed.  net8.0 is compatible.  net8.0-android was computed.  net8.0-browser was computed.  net8.0-ios was computed.  net8.0-maccatalyst was computed.  net8.0-macos was computed.  net8.0-tvos was computed.  net8.0-windows was computed.  net9.0 is compatible.  net9.0-android was computed.  net9.0-browser was computed.  net9.0-ios was computed.  net9.0-maccatalyst was computed.  net9.0-macos was computed.  net9.0-tvos was computed.  net9.0-windows was computed.  net10.0 is compatible.  net10.0-android was computed.  net10.0-browser was computed.  net10.0-ios was computed.  net10.0-maccatalyst was computed.  net10.0-macos was computed.  net10.0-tvos was computed.  net10.0-windows was computed. 
.NET Core netcoreapp2.0 was computed.  netcoreapp2.1 was computed.  netcoreapp2.2 was computed.  netcoreapp3.0 was computed.  netcoreapp3.1 was computed. 
.NET Standard netstandard2.0 is compatible.  netstandard2.1 is compatible. 
.NET Framework net461 was computed.  net462 is compatible.  net463 was computed.  net47 was computed.  net471 was computed.  net472 was computed.  net48 was computed.  net481 was computed. 
MonoAndroid monoandroid was computed. 
MonoMac monomac was computed. 
MonoTouch monotouch was computed. 
Tizen tizen40 was computed.  tizen60 was computed. 
Xamarin.iOS xamarinios was computed. 
Xamarin.Mac xamarinmac was computed. 
Xamarin.TVOS xamarintvos was computed. 
Xamarin.WatchOS xamarinwatchos was computed. 
Compatible target framework(s)
Included target framework(s) (in package)
Learn more about Target Frameworks and .NET Standard.

NuGet packages

This package is not used by any NuGet packages.

GitHub repositories

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Version Downloads Last Updated
10.0.0 77 7/13/2026

https://github.com/configcat/.net-sdk/releases