ReactiveProperty 9.0.0-pre202302040959

This is a prerelease version of ReactiveProperty.
There is a newer version of this package available.
See the version list below for details.
dotnet add package ReactiveProperty --version 9.0.0-pre202302040959
NuGet\Install-Package ReactiveProperty -Version 9.0.0-pre202302040959
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="9.0.0-pre202302040959" />
For projects that support PackageReference, copy this XML node into the project file to reference the package.
paket add ReactiveProperty --version 9.0.0-pre202302040959
#r "nuget: ReactiveProperty, 9.0.0-pre202302040959"
#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=9.0.0-pre202302040959&prerelease

// Install ReactiveProperty as a Cake Tool
#tool nuget:?package=ReactiveProperty&version=9.0.0-pre202302040959&prerelease

Japanese

ReactiveProperty

ReactiveProperty provides MVVM and asynchronous support features under Reactive Extensions. Target framework is .NET 6.0+, .NET Framework 4.7.2 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 libraries such as Prism, Microsoft.Toolkit.Mvvm and 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.
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 6 or later and .NET Framework 4.7.2 or later.
ReactiveProperty.Blazor alternate text is missing from this package README imagealternate text is missing from this package README image The package includes validation support for EditForm component of Blazor with ReactiveProperty validation feature. This is for .NET 6.0 or later.

Following packages are maitanance phase.

Package Id Version and downloads Description
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 is compatible.  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 was computed. 
.NET Standard netstandard2.0 is compatible.  netstandard2.1 was computed. 
.NET Framework net461 was computed.  net462 was computed.  net463 was computed.  net47 was computed.  net471 was computed.  net472 is compatible.  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 (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
9.5.0 4,496 2/28/2024
9.4.1 3,071 2/12/2024
9.4.0 421 2/11/2024
9.4.0-pre8 554 12/21/2023
9.4.0-pre7 333 12/21/2023
9.4.0-pre6 321 12/21/2023
9.4.0-pre5 323 12/21/2023
9.4.0-pre4 336 12/21/2023
9.3.4 17,331 10/30/2023
9.3.4-pre202310290551 387 10/29/2023
9.3.3 2,644 10/10/2023
9.3.2 4,743 9/25/2023
9.3.2-pre202309140728 510 9/14/2023
9.3.1 12,003 8/11/2023
9.3.0 2,796 7/31/2023
9.3.0-pre202307291429 623 7/29/2023
9.2.0 8,706 6/19/2023
9.2.0-pre202305241301 679 5/25/2023
9.1.2 21,395 3/12/2023
9.0.0 8,740 2/12/2023
9.0.0-pre202302040959 661 2/4/2023
9.0.0-pre202301080724 733 1/8/2023
9.0.0-pre202301050852 632 1/5/2023
8.2.0 29,202 11/10/2022
8.1.2 41,265 6/6/2022
8.1.2-pre202206051057 628 6/5/2022
8.1.1 4,285 5/27/2022
8.1.0 4,823 4/30/2022
8.1.0-pre202204290912 659 4/29/2022
8.1.0-pre202204290644 616 4/29/2022
8.0.5 11,494 3/24/2022
8.0.5-pre202203191529 667 3/19/2022
8.0.5-pre202203191312 617 3/19/2022
8.0.4 12,852 3/5/2022
8.0.4-pre202203040658 651 3/4/2022
8.0.3 33,455 12/5/2021
8.0.3-pre202112031043 1,324 12/3/2021
8.0.3-pre202112030833 1,321 12/3/2021
8.0.2 4,825 11/21/2021
8.0.1 1,309 11/20/2021
8.0.1-pre202111200140 1,019 11/20/2021
8.0.0 36,433 11/9/2021
8.0.0-pre202111090825 709 11/9/2021
8.0.0-pre202110240626 1,881 10/24/2021
8.0.0-pre202110161410 834 10/16/2021
8.0.0-pre202110160852 723 10/16/2021
8.0.0-pre202110160831 715 10/16/2021
8.0.0-pre202110131323 754 10/13/2021
8.0.0-pre202110071401 770 10/7/2021
8.0.0-pre202110060758 795 10/6/2021
8.0.0-pre202110060735 683 10/6/2021
8.0.0-pre202109190434 849 9/19/2021
8.0.0-pre202109160117 764 9/16/2021
8.0.0-pre202108141424 858 8/14/2021
8.0.0-pre202107040319 1,285 7/4/2021
7.12.0 43,125 8/6/2021
7.11.0 13,176 5/31/2021
7.10.0 10,742 4/29/2021
7.9.0 13,965 4/20/2021
7.8.3 11,326 3/24/2021
7.8.2 1,291 3/23/2021
7.8.1 3,918 3/11/2021
7.8.1-pre202103031133 867 3/3/2021
7.8.0 6,857 2/21/2021
7.8.0-pre202102210255 777 2/21/2021
7.8.0-pre202102201703 800 2/20/2021
7.7.1 1,899 2/19/2021
7.7.1-pre202102190925 793 2/19/2021
7.7.0 12,452 1/26/2021
7.6.1 4,201 1/15/2021
7.6.0 236,177 1/13/2021
7.5.1 41,705 10/19/2020
7.5.0 1,561 10/17/2020
7.5.0-pre202010141113 870 10/14/2020
7.4.1 20,297 9/23/2020
7.4.0 2,164 9/18/2020
7.3.0 1,690 9/17/2020
7.2.1 25,159 9/11/2020
7.2.0 50,153 8/4/2020
7.1.0 61,658 5/26/2020
7.1.0-pre202005251107 939 5/25/2020
7.0.1 3,702 5/14/2020
7.0.1-pre202005131606 933 5/13/2020
7.0.0 4,985 5/5/2020
7.0.0-ci20200503102823 941 5/3/2020
7.0.0-ci20200503100450 928 5/3/2020
6.2.0 25,393 1/17/2020
6.1.4 15,706 11/16/2019
6.1.3 20,618 9/26/2019
6.1.2 11,969 8/31/2019
6.0.3 10,137 7/26/2019
5.6.0 101,754 6/20/2019
5.5.1 51,490 5/22/2019
5.4.0 8,747 4/3/2019
5.4.0-pre1 1,406 4/3/2019
5.3.2 28,232 12/14/2018
5.3.1 2,216 12/13/2018
5.3.0 56,956 9/28/2018
5.2.0 12,267 8/2/2018
5.1.1 5,570 6/21/2018
5.0.0 5,425 6/3/2018
4.2.2 86,994 4/20/2018
4.2.1 5,126 3/17/2018
4.2.0 9,969 1/28/2018
4.1.1 3,074 1/20/2018
4.1.0 2,371 1/18/2018
4.0.1-pre1 1,786 1/14/2018
4.0.0 5,719 1/8/2018
4.0.0-pre5 1,788 1/6/2018
4.0.0-pre4 2,718 10/21/2017
4.0.0-pre3 2,330 6/16/2017
3.6.0 30,236 3/27/2017
3.5.1 26,484 3/3/2017
3.5.0 4,927 2/15/2017
3.4.0 5,994 11/30/2016
3.3.2 2,913 11/21/2016
3.3.1 3,517 11/15/2016
3.2.0 40,696 10/10/2016
3.1.0 2,350 10/7/2016
3.0.1 5,704 8/13/2016
3.0.0 9,040 8/12/2016
3.0.0-pre5 1,903 7/20/2016
3.0.0-pre4 1,978 7/9/2016
3.0.0-pre3 1,878 7/9/2016
3.0.0-pre2 1,818 7/9/2016
3.0.0-pre1 1,981 7/6/2016
2.9.0 11,351 7/20/2016
2.8.0 4,506 7/2/2016
2.7.4 2,809 6/24/2016
2.7.3.1 2,739 6/16/2016
2.7.3 3,062 6/6/2016
2.7.2 5,887 4/23/2016
2.7.1 3,858 4/9/2016
2.7.0 2,150 4/8/2016
2.6.2 2,362 4/2/2016
2.6.1 2,076 4/2/2016
2.6.0 2,411 3/24/2016
2.6.0-beta1 2,340 2/29/2016
2.5.0 6,819 2/7/2016
2.4.2 3,931 1/10/2016
2.4.1 3,088 12/25/2015
2.4.0 2,206 12/23/2015
2.4.0-pre3 1,900 12/23/2015
2.4.0-pre2 1,888 12/23/2015
2.4.0-pre1 1,904 12/22/2015
2.3.1 2,586 12/18/2015
2.3.0.1 2,902 12/4/2015
2.3.0 2,899 12/1/2015
2.3.0-pre4 2,193 11/27/2015
2.3.0-pre3 2,134 11/26/2015
2.3.0-pre2 2,105 11/26/2015
2.3.0-pre 2,140 11/25/2015
2.2.8.1-pre 1,930 11/24/2015
2.2.8 2,887 11/10/2015
2.2.7.1 2,673 10/26/2015
2.2.7 2,115 10/26/2015
2.2.6.1 2,540 10/12/2015
2.2.6 2,207 10/9/2015
2.2.5 3,384 10/1/2015
2.2.4 2,744 9/11/2015
2.2.3.1 3,209 8/28/2015
2.2.3 2,172 8/27/2015
2.2.2 2,830 7/20/2015
2.2.1 2,766 6/28/2015
2.2.0 3,827 4/24/2015
2.1.8.2 2,454 4/2/2015
2.1.8.1 2,413 3/16/2015
2.1.7 2,209 3/14/2015
2.1.6 2,132 3/14/2015
2.1.5 2,173 3/12/2015
2.1.3 2,147 3/10/2015
2.1.2 2,140 3/8/2015
2.1.1 2,171 3/7/2015
2.1.0 2,720 2/25/2015
2.0.1 2,664 2/23/2015
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2.0.0-pre8 2,288 2/23/2015
2.0.0-pre7 2,324 2/22/2015
2.0.0-pre6 2,289 2/22/2015
2.0.0-pre5 2,272 2/22/2015
2.0.0-pre4 2,189 2/22/2015
2.0.0-pre3 2,198 2/22/2015
2.0.0-pre2 4,139 2/18/2015
2.0.0-pre1 2,204 2/17/2015
1.2.1 2,594 2/21/2015
1.2.0 2,364 2/17/2015
1.1.2 4,651 2/8/2015
1.1.1.2 2,242 2/6/2015
1.1.1.1 3,002 10/19/2014
1.1.1 2,217 10/19/2014
1.1.0 2,451 10/13/2014
1.1.0-beta2 1,882 10/11/2014
1.1.0-beta1 1,888 10/11/2014
1.0.3.1 2,365 10/10/2014
1.0.3 2,429 10/9/2014
1.0.2.2 2,261 10/5/2014
1.0.2 2,266 9/27/2014
1.0.1.1 2,111 9/27/2014
1.0.1 2,183 9/27/2014
1.0.0.2 2,356 9/4/2014
1.0.0.1 2,210 9/4/2014
1.0.0 2,375 9/4/2014
0.4.5.1 2,664 6/3/2014
0.4.5 2,532 5/7/2014
0.4.5-beta3 1,863 5/6/2014
0.4.5-beta2 2,323 5/6/2014
0.4.5-beta1 1,869 5/6/2014
0.4.4.3 2,323 5/4/2014
0.4.4.2 2,356 5/3/2014
0.4.4.1 2,265 5/3/2014
0.4.4 2,212 5/3/2014
0.4.3.1 2,222 4/30/2014
0.4.2.1 2,722 4/12/2014
0.4.2 2,807 4/11/2014
0.4.2-beta5 2,496 4/11/2014
0.4.2-beta4 2,548 4/11/2014
0.4.2-beta3 1,943 4/4/2014
0.4.2-beta2 1,947 4/4/2014
0.4.2-beta1 1,926 4/1/2014
0.4.1 2,318 2/2/2014
0.4.0.1 2,218 12/31/2013
0.4.0-rc1 1,902 12/16/2013
0.3.2 4,216 11/24/2011
0.3.1 2,471 11/21/2011
0.3.0 2,445 11/20/2011
0.2.0 2,645 10/17/2011
0.1.0 2,693 10/6/2011