ConfigCat.Client 9.4.2

.NET 5.0 .NET Standard 2.0 .NET Framework 4.5

dotnet add package ConfigCat.Client --version 9.4.2

NuGet\Install-Package ConfigCat.Client -Version 9.4.2

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.Client" Version="9.4.2" />

For projects that support PackageReference, copy this XML node into the project file to reference the package.

<PackageVersion Include="ConfigCat.Client" Version="9.4.2" />
                    

                            Directory.Packages.props

<PackageReference Include="ConfigCat.Client" />
                    

                            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.Client --version 9.4.2

The NuGet Team does not provide support for this client. Please contact its maintainers for support.

#r "nuget: ConfigCat.Client, 9.4.2"

#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.

#addin nuget:?package=ConfigCat.Client&version=9.4.2
                    

                            Install as a Cake Addin

#tool nuget:?package=ConfigCat.Client&version=9.4.2
                    

                            Install as a Cake Tool

The NuGet Team does not provide support for this client. Please contact its maintainers for support.

ConfigCat SDK for .NET

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

Supported runtimes

.NET 5+
.NET Framework 4.5+
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

Install-Package ConfigCat.Client

dotnet add package ConfigCat.Client

2. Import ConfigCat.Client to your application

using ConfigCat.Client;

3. Go to the ConfigCat Dashboard to get your SDK Key:

SDK-KEY

4. Create a ConfigCat client instance:

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.)

5. Get your setting value:

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

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

6. On application exit:

client.Dispose();

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

Getting user specific setting values with Targeting

Using this feature, you will be able to get different setting values for different users in your application by passing a User Object to the GetValue() function.

Sample/Demo apps

Polling Modes

The ConfigCat SDK supports 3 different polling mechanisms to acquire the setting values from ConfigCat. After latest setting values are downloaded, they are stored in the internal cache then all requests are served from there. 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 4.5+ (including Ngen)
.NET Core 3.1, .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)*
Universal Windows Platform 10.0.16299.0+ (.NET Native)**
WebAssembly (Mono AOT/Emscripten, also known as wasm-tools)

*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. **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 is compatible. net5.0-windows was computed. net6.0 is compatible. 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 was computed. 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 was computed. 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	net45 is compatible. net451 was computed. net452 was computed. net46 was computed. net461 is compatible. net462 was computed. 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.

.NETFramework 4.5
- Newtonsoft.Json (>= 13.0.2)
- System.Memory (>= 4.5.5)
- System.Text.RegularExpressions (>= 4.3.1)
- System.Threading.Tasks.Extensions (>= 4.5.4)
.NETFramework 4.6.1
- System.Text.Json (>= 6.0.10)
- System.Text.RegularExpressions (>= 4.3.1)
.NETStandard 2.0
- System.Text.Json (>= 6.0.10)
- System.Text.RegularExpressions (>= 4.3.1)
.NETStandard 2.1
- System.Text.Json (>= 6.0.10)
- System.Text.RegularExpressions (>= 4.3.1)
net5.0
- System.Text.Json (>= 6.0.10)
net6.0
- No dependencies.
net8.0
- No dependencies.

NuGet packages (7)

Showing the top 5 NuGet packages that depend on ConfigCat.Client:

Package	Downloads
Musement.Extensions.Configuration.ConfigCat A .NET configuration provider for ConfigCat	123.7K
OpenFeature.Contrib.Providers.ConfigCat ConfigCat provider for .NET	54.6K
Codelux Codelux is a collection of tools that simplify and abstract processes such as dependency injection, caching, configuration, mapping etc. Codelux.ServiceStack includes various ServiceStack helper libraries that make OrmLite model mapping, dependency injection and bootstrapping simple, elegant and clean. Additionally, Codelux.Plugins provides a base plugin framework for a pluggable architecture design.	6.2K
Xamarin.Security Add your app security control by using cloud's feature flags	3.0K
XamarinSecurityTest Add your app security control by using cloud's feature flags	975

GitHub repositories (1)

Showing the top 1 popular GitHub repositories that depend on ConfigCat.Client:

Repository	Stars
VladislavAntonyuk/MauiSamples .NET MAUI Samples	842

Version	Downloads	Last Updated
9.4.2	4,190	6/23/2025
9.4.1	8,379	6/3/2025
9.4.0	2,291	5/30/2025
9.3.2	670,935	10/9/2024
9.3.1	140,759	9/11/2024
9.3.0	31,794	8/28/2024
9.2.0	316,247	5/13/2024
9.1.0	323,993	3/21/2024
9.0.1	357,169	1/9/2024
9.0.0	103,996	11/21/2023
8.2.0	408,273	7/26/2023
8.1.1	79,148	6/23/2023
8.1.0	26,861	6/12/2023
8.0.0	21,832	5/26/2023
7.2.0	525,763	1/11/2023
7.1.0	39,016	12/16/2022
7.0.0	94,886	11/10/2022
6.5.3	174,958	9/7/2022
6.5.2	69,420	8/5/2022
6.5.1	351,019	4/7/2022
6.5.0	5,617	4/6/2022
6.4.12	1,153	4/4/2022
6.4.9	14,987	3/4/2022
6.4.8	998	3/3/2022
6.4.7	995	3/3/2022
6.4.6	981	3/3/2022
6.4.3	986	3/3/2022
6.4.0	1,046	3/3/2022
6.2.1	131,571	9/20/2021
6.1.20	11,366	9/8/2021
6.1.0	485,134	1/7/2021
6.0.47	1,268	1/7/2021
6.0.0	37,243	10/12/2020
5.3.77	33,030	9/1/2020
5.2.58	36,696	7/2/2020
5.1.53	67,499	4/19/2020
5.0.39	2,611	4/9/2020
4.0.36	22,071	2/27/2020
3.2.28	44,041	1/15/2020
3.1.23	1,429	12/28/2019
3.0.19	2,671	11/25/2019
2.5.6	23,422	9/9/2019
2.5.3	1,392	8/8/2019
2.4.0	1,942	7/27/2019
2.3.0	1,350	7/19/2019
2.2.2	1,343	7/14/2019
2.2.1	52,311	4/9/2019
2.1.4	1,552	11/26/2018
2.1.3	1,383	11/21/2018
2.1.0	1,465	11/9/2018
2.0.1	1,600	10/23/2018
2.0.0	1,456	10/9/2018
1.1.6	1,808	5/9/2018
1.1.5	1,824	4/26/2018
1.1.3	1,840	4/17/2018
1.1.2	11,364	4/8/2018

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