ReactiveProperty 8.0.3

There is a newer version of this package available.
See the version list below for details.
dotnet add package ReactiveProperty --version 8.0.3
NuGet\Install-Package ReactiveProperty -Version 8.0.3
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="ReactiveProperty" Version="8.0.3" />
For projects that support PackageReference, copy this XML node into the project file to reference the package.
paket add ReactiveProperty --version 8.0.3
#r "nuget: ReactiveProperty, 8.0.3"
#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.
// Install ReactiveProperty as a Cake Addin
#addin nuget:?package=ReactiveProperty&version=8.0.3

// Install ReactiveProperty as a Cake Tool
#tool nuget:?package=ReactiveProperty&version=8.0.3

Japanese

ReactiveProperty

ReactiveProperty provides MVVM and asynchronous support features under Reactive Extensions. Target framework is .NET 6.0, .NET Core 3.1, .NET Framework 4.6.1 and .NET Standard 2.0.

alternate text is missing from this package README image alternate text is missing from this package README image Build and Release

ReactiveProperty overview

ReactiveProperty is a very powerful and simple library.

Delay and Select

This sample app's ViewModel code is as below:

public class MainPageViewModel
{
    public ReactiveProperty<string> Input { get; }
    public ReadOnlyReactiveProperty<string> Output { get; }
    public MainPageViewModel()
    {
        Input = new ReactiveProperty<string>("");
        Output = Input
            .Delay(TimeSpan.FromSeconds(1))
            .Select(x => x.ToUpper())
            .ToReadOnlyReactiveProperty();
    }
}

It's LINQ and Rx magic.

All steps are written in the "Getting Started" section in the ReactiveProperty documentation.

This library's concept is "Fun programing". ViewModel code using ReactiveProperties is very simple.

ViewModel's popular implementation:

public class AViewModel : INotifyPropertyChanged
{
    public event PropertyChangedEventHandler PropertyChanged;

    private string _name;
    public string Name
    {
        get => _name;
        set
        {
            _name = value;
            PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(nameof(Name)));

            // Update a command status
            DoSomethingCommand.RaiseCanExecuteChanged();
        }
    }

    private string _memo;
    public string Memo
    {
        get => _memo;
        set
        {
            _memo = value;
            PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(nameof(Memo)));

            // Update a command status
            DoSomethingCommand.RaiseCanExecuteChanged();
        }
    }

    // DelegateCommand is plane ICommand implementation.
    public DelegateCommand DoSomethingCommand { get; }

    public AViewModel()
    {
        DoSomethingCommand = new DelegateCommand(
            () => { ... },
            () => !string.IsNullOrEmpty(Name) && !string.IsNullOrEmpty(Memo)
        );
    }
}

Binding code:

<TextBlock Text="{Binding Name}">
<TextBlock Text="{Binding Memo}">

ViewModel's implementation using ReactiveProperty:

public class AViewModel
{
    public ReactiveProperty<string> Name { get; }
    public ReactiveProperty<string> Memo { get; }
    public ReactiveCommand DoSomethingCommand { get; }

    public AViewModel()
    {
        Name = new ReactiveProperty<string>()
            .SetValidateNotifyError(x => string.IsNullOrEmpty(x) ? "Invalid value" : null);
        Memo = new ReactiveProperty<string>()
            .SetValidateNotifyError(x => string.IsNullOrEmpty(x) ? "Invalid value" : null);
        DoSomethingCommand = new[]
            {
                Name.ObserveHasErrors,
                Memo.ObserveHasErrors,
            }
            .CombineLatestValuesAreAllFalse()
            .ToReactiveCommand()
            .WithSubscribe(() => { ... });
    }
}

Binding code:

<TextBlock Text="{Binding Name.Value}">
<TextBlock Text="{Binding Memo.Value}">

It's very simple.

ReactiveProperty doesn't provide base class by ViewModel, which means that ReactiveProperty can be used together with another MVVM library like Prism, MVVMLight, etc...

Documentation

ReactiveProperty documentation

NuGet packages

Package Id Version and downloads Description
ReactiveProperty alternate text is missing from this package README imagealternate text is missing from this package README image The package includes all core features, and the target platform is .NET Standard 2.0. It fits almost all situations.
ReactiveProperty.Core alternate text is missing from this package README imagealternate text is missing from this package README image The package includes minimum classes such as ReactivePropertySlim<T> and ReadOnlyReactivePropertySlim<T>. And this doesn't have any dependency even System.Reactive. If you don't need Rx features, then it fits.
ReactiveProperty.WPF alternate text is missing from this package README imagealternate text is missing from this package README image The package includes EventToReactiveProperty and EventToReactiveCommand for WPF. This is for .NET Core 3.0 or later and .NET Framework 4.6.1 or later.
ReactiveProperty.UWP alternate text is missing from this package README imagealternate text is missing from this package README image The package includes EventToReactiveProperty and EventToReactiveCommand for UWP.
ReactiveProperty.XamarinAndroid alternate text is missing from this package README imagealternate text is missing from this package README image The package includes many extension methods to create IObservable from events for Xamarin.Android native.
ReactiveProperty.XamariniOS alternate text is missing from this package README imagealternate text is missing from this package README image The package includes many extension methods to bind ReactiveProperty and ReactiveCommand to Xamarin.iOS native controls.

Support

I'm not watching StackOverflow and other forums to support ReactiveProperty, so please feel free to post questions at Github issues. I'm available Japanese(1st language) and English(2nd language).

If too many questions are posted, then I plan to separate posting place about feature requests, issues, questions.

Author info

Yoshifumi Kawai a.k.a. @neuecc is Founder/CEO/CTO of Cysharp, Inc in Tokyo, Japan. Awarded Microsoft MVP for Developer Technologies since April, 2011. He is an original owner of ReactiveProperty.

Takaaki Suzuki a.k.a. @xin9le software developer in Fukui, Japan. Awarded Microsoft MVP for Developer Technologies since July, 2012.

Kazuki Ota a.k.a. @okazuki software developer in Tokyo, Japan. Awarded Microsoft MVP for Windows Development since July 2011 to Feb 2017. Now, working at Microsoft Japan.

Product Compatible and additional computed target framework versions.
.NET net5.0 was computed.  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 was computed.  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. 
.NET Core netcoreapp2.0 was computed.  netcoreapp2.1 was computed.  netcoreapp2.2 was computed.  netcoreapp3.0 was computed.  netcoreapp3.1 is compatible. 
.NET Standard netstandard2.0 is compatible.  netstandard2.1 was computed. 
.NET Framework 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)
Additional computed target framework(s)
Learn more about Target Frameworks and .NET Standard.

NuGet packages (19)

Showing the top 5 NuGet packages that depend on ReactiveProperty:

Package Downloads
MessagePack.ReactiveProperty

Extremely Fast MessagePack Serializer for C#(.NET, .NET Core, Unity, Xamarin). Extension support for ReactiveProperty.

ReactiveProperty.WPF

ReactiveProperty.WPF provides behaviors such as EventToReactiveCommand and EventToReactiveProperty.

ReactiveProperty.XamarinAndroid

ReactiveProperty.XamarinAndroid provides many useful extension methods for .NET for Android that can be used with ReactiveProperty.

ReactiveProperty.XamariniOS

ReactiveProperty.XamariniOS provides many useful extension methods for .NET for iOS that can be used with ReactiveProperty.

Rx.Community.Extensions

Community-written extension methods to Rx

GitHub repositories (19)

Showing the top 5 popular GitHub repositories that depend on ReactiveProperty:

Repository Stars
MathewSachin/Captura
Capture Screen, Audio, Cursor, Mouse Clicks and Keystrokes
MessagePack-CSharp/MessagePack-CSharp
Extremely Fast MessagePack Serializer for C#(.NET, .NET Core, Unity, Xamarin). / msgpack.org[C#]
runceel/ReactiveProperty
ReactiveProperty provides MVVM and asynchronous support features under Reactive Extensions. Target frameworks are .NET 6+, .NET Framework 4.7.2 and .NET Standard 2.0.
danm-de/pcsc-sharp
PC/SC wrapper classes for .NET, written in C#
muak/AiForms.SettingsView
SettingsView for Xamarin.Forms
Version Downloads Last updated
9.4.1 1,270 2/12/2024
9.4.0 221 2/11/2024
9.4.0-pre8 444 12/21/2023
9.4.0-pre7 227 12/21/2023
9.4.0-pre6 210 12/21/2023
9.4.0-pre5 221 12/21/2023
9.4.0-pre4 229 12/21/2023
9.3.4 13,958 10/30/2023
9.3.4-pre202310290551 285 10/29/2023
9.3.3 2,407 10/10/2023
9.3.2 4,099 9/25/2023
9.3.2-pre202309140728 398 9/14/2023
9.3.1 11,276 8/11/2023
9.3.0 2,526 7/31/2023
9.3.0-pre202307291429 529 7/29/2023
9.2.0 8,116 6/19/2023
9.2.0-pre202305241301 576 5/25/2023
9.1.2 20,019 3/12/2023
9.0.0 8,293 2/12/2023
9.0.0-pre202302040959 548 2/4/2023
9.0.0-pre202301080724 621 1/8/2023
9.0.0-pre202301050852 534 1/5/2023
8.2.0 28,056 11/10/2022
8.1.2 38,767 6/6/2022
8.1.2-pre202206051057 537 6/5/2022
8.1.1 4,093 5/27/2022
8.1.0 4,629 4/30/2022
8.1.0-pre202204290912 569 4/29/2022
8.1.0-pre202204290644 516 4/29/2022
8.0.5 11,185 3/24/2022
8.0.5-pre202203191529 565 3/19/2022
8.0.5-pre202203191312 522 3/19/2022
8.0.4 12,116 3/5/2022
8.0.4-pre202203040658 541 3/4/2022
8.0.3 31,878 12/5/2021
8.0.3-pre202112031043 1,223 12/3/2021
8.0.3-pre202112030833 1,227 12/3/2021
8.0.2 4,615 11/21/2021
8.0.1 1,145 11/20/2021
8.0.1-pre202111200140 918 11/20/2021
8.0.0 33,888 11/9/2021
8.0.0-pre202111090825 614 11/9/2021
8.0.0-pre202110240626 1,723 10/24/2021
8.0.0-pre202110161410 735 10/16/2021
8.0.0-pre202110160852 637 10/16/2021
8.0.0-pre202110160831 618 10/16/2021
8.0.0-pre202110131323 654 10/13/2021
8.0.0-pre202110071401 674 10/7/2021
8.0.0-pre202110060758 688 10/6/2021
8.0.0-pre202110060735 580 10/6/2021
8.0.0-pre202109190434 748 9/19/2021
8.0.0-pre202109160117 659 9/16/2021
8.0.0-pre202108141424 761 8/14/2021
8.0.0-pre202107040319 1,178 7/4/2021
7.12.0 41,757 8/6/2021
7.11.0 12,868 5/31/2021
7.10.0 10,561 4/29/2021
7.9.0 13,392 4/20/2021
7.8.3 10,943 3/24/2021
7.8.2 1,134 3/23/2021
7.8.1 3,706 3/11/2021
7.8.1-pre202103031133 761 3/3/2021
7.8.0 6,599 2/21/2021
7.8.0-pre202102210255 675 2/21/2021
7.8.0-pre202102201703 697 2/20/2021
7.7.1 1,728 2/19/2021
7.7.1-pre202102190925 688 2/19/2021
7.7.0 11,964 1/26/2021
7.6.1 3,971 1/15/2021
7.6.0 235,981 1/13/2021
7.5.1 40,031 10/19/2020
7.5.0 1,383 10/17/2020
7.5.0-pre202010141113 774 10/14/2020
7.4.1 19,698 9/23/2020
7.4.0 2,000 9/18/2020
7.3.0 1,523 9/17/2020
7.2.1 24,047 9/11/2020
7.2.0 49,120 8/4/2020
7.1.0 60,831 5/26/2020
7.1.0-pre202005251107 844 5/25/2020
7.0.1 3,536 5/14/2020
7.0.1-pre202005131606 833 5/13/2020
7.0.0 4,797 5/5/2020
7.0.0-ci20200503102823 827 5/3/2020
7.0.0-ci20200503100450 830 5/3/2020
6.2.0 24,984 1/17/2020
6.1.4 15,465 11/16/2019
6.1.3 20,257 9/26/2019
6.1.2 11,769 8/31/2019
6.0.3 9,948 7/26/2019
5.6.0 92,058 6/20/2019
5.5.1 50,132 5/22/2019
5.4.0 8,533 4/3/2019
5.4.0-pre1 1,305 4/3/2019
5.3.2 27,962 12/14/2018
5.3.1 2,045 12/13/2018
5.3.0 56,284 9/28/2018
5.2.0 12,071 8/2/2018
5.1.1 5,395 6/21/2018
5.0.0 5,238 6/3/2018
4.2.2 85,839 4/20/2018
4.2.1 5,012 3/17/2018
4.2.0 9,863 1/28/2018
4.1.1 2,974 1/20/2018
4.1.0 2,257 1/18/2018
4.0.1-pre1 1,675 1/14/2018
4.0.0 5,557 1/8/2018
4.0.0-pre5 1,680 1/6/2018
4.0.0-pre4 2,620 10/21/2017
4.0.0-pre3 2,232 6/16/2017
3.6.0 30,044 3/27/2017
3.5.1 26,357 3/3/2017
3.5.0 4,811 2/15/2017
3.4.0 5,883 11/30/2016
3.3.2 2,809 11/21/2016
3.3.1 3,407 11/15/2016
3.2.0 39,743 10/10/2016
3.1.0 2,236 10/7/2016
3.0.1 5,419 8/13/2016
3.0.0 8,929 8/12/2016
3.0.0-pre5 1,797 7/20/2016
3.0.0-pre4 1,865 7/9/2016
3.0.0-pre3 1,771 7/9/2016
3.0.0-pre2 1,708 7/9/2016
3.0.0-pre1 1,869 7/6/2016
2.9.0 11,186 7/20/2016
2.8.0 4,348 7/2/2016
2.7.4 2,712 6/24/2016
2.7.3.1 2,629 6/16/2016
2.7.3 2,968 6/6/2016
2.7.2 5,769 4/23/2016
2.7.1 3,740 4/9/2016
2.7.0 2,045 4/8/2016
2.6.2 2,268 4/2/2016
2.6.1 1,971 4/2/2016
2.6.0 2,302 3/24/2016
2.6.0-beta1 2,240 2/29/2016
2.5.0 6,693 2/7/2016
2.4.2 3,823 1/10/2016
2.4.1 2,980 12/25/2015
2.4.0 2,108 12/23/2015
2.4.0-pre3 1,799 12/23/2015
2.4.0-pre2 1,787 12/23/2015
2.4.0-pre1 1,804 12/22/2015
2.3.1 2,488 12/18/2015
2.3.0.1 2,807 12/4/2015
2.3.0 2,791 12/1/2015
2.3.0-pre4 2,092 11/27/2015
2.3.0-pre3 2,035 11/26/2015
2.3.0-pre2 1,998 11/26/2015
2.3.0-pre 2,028 11/25/2015
2.2.8.1-pre 1,833 11/24/2015
2.2.8 2,782 11/10/2015
2.2.7.1 2,565 10/26/2015
2.2.7 2,006 10/26/2015
2.2.6.1 2,434 10/12/2015
2.2.6 2,094 10/9/2015
2.2.5 3,279 10/1/2015
2.2.4 2,634 9/11/2015
2.2.3.1 3,087 8/28/2015
2.2.3 2,069 8/27/2015
2.2.2 2,725 7/20/2015
2.2.1 2,645 6/28/2015
2.2.0 3,725 4/24/2015
2.1.8.2 2,350 4/2/2015
2.1.8.1 2,309 3/16/2015
2.1.7 2,104 3/14/2015
2.1.6 2,024 3/14/2015
2.1.5 2,071 3/12/2015
2.1.3 2,046 3/10/2015
2.1.2 2,038 3/8/2015
2.1.1 2,058 3/7/2015
2.1.0 2,611 2/25/2015
2.0.1 2,558 2/23/2015
2.0.0 2,364 2/23/2015
2.0.0-pre8 2,175 2/23/2015
2.0.0-pre7 2,219 2/22/2015
2.0.0-pre6 2,186 2/22/2015
2.0.0-pre5 2,173 2/22/2015
2.0.0-pre4 2,079 2/22/2015
2.0.0-pre3 2,092 2/22/2015
2.0.0-pre2 4,036 2/18/2015
2.0.0-pre1 2,103 2/17/2015
1.2.1 2,508 2/21/2015
1.2.0 2,267 2/17/2015
1.1.2 4,545 2/8/2015
1.1.1.2 2,132 2/6/2015
1.1.1.1 2,899 10/19/2014
1.1.1 2,112 10/19/2014
1.1.0 2,338 10/13/2014
1.1.0-beta2 1,773 10/11/2014
1.1.0-beta1 1,781 10/11/2014
1.0.3.1 2,259 10/10/2014
1.0.3 2,312 10/9/2014
1.0.2.2 2,150 10/5/2014
1.0.2 2,164 9/27/2014
1.0.1.1 2,017 9/27/2014
1.0.1 2,091 9/27/2014
1.0.0.2 2,252 9/4/2014
1.0.0.1 2,110 9/4/2014
1.0.0 2,263 9/4/2014
0.4.5.1 2,568 6/3/2014
0.4.5 2,428 5/7/2014
0.4.5-beta3 1,761 5/6/2014
0.4.5-beta2 2,219 5/6/2014
0.4.5-beta1 1,765 5/6/2014
0.4.4.3 2,220 5/4/2014
0.4.4.2 2,255 5/3/2014
0.4.4.1 2,156 5/3/2014
0.4.4 2,111 5/3/2014
0.4.3.1 2,111 4/30/2014
0.4.2.1 2,616 4/12/2014
0.4.2 2,701 4/11/2014
0.4.2-beta5 2,387 4/11/2014
0.4.2-beta4 2,438 4/11/2014
0.4.2-beta3 1,845 4/4/2014
0.4.2-beta2 1,838 4/4/2014
0.4.2-beta1 1,820 4/1/2014
0.4.1 2,208 2/2/2014
0.4.0.1 2,112 12/31/2013
0.4.0-rc1 1,801 12/16/2013
0.3.2 4,092 11/24/2011
0.3.1 2,364 11/21/2011
0.3.0 2,335 11/20/2011
0.2.0 2,555 10/17/2011
0.1.0 2,573 10/6/2011