ReactiveProperty 8.0.4-pre202203040658

.NET 6.0 .NET Core 3.1 .NET Standard 2.0 .NET Framework 4.7.2
This is a prerelease version of ReactiveProperty.
There is a newer version of this package available.
See the version list below for details.
Install-Package ReactiveProperty -Version 8.0.4-pre202203040658
dotnet add package ReactiveProperty --version 8.0.4-pre202203040658
<PackageReference Include="ReactiveProperty" Version="8.0.4-pre202203040658" />
For projects that support PackageReference, copy this XML node into the project file to reference the package.
paket add ReactiveProperty --version 8.0.4-pre202203040658
The NuGet Team does not provide support for this client. Please contact its maintainers for support.
#r "nuget: ReactiveProperty, 8.0.4-pre202203040658"
#r directive can be used in F# Interactive, C# scripting and .NET Interactive. 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=8.0.4-pre202203040658&prerelease

// Install ReactiveProperty as a Cake Tool
#tool nuget:?package=ReactiveProperty&version=8.0.4-pre202203040658&prerelease
The NuGet Team does not provide support for this client. Please contact its maintainers for support.

Japanese

ReactiveProperty

ReactiveProperty provides MVVM and asynchronous support features under Reactive Extensions. Target framework is .NET 6.0, .NET Core 3.1, .NET Framework 4.7.2 and .NET Standard 2.0.

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 The package includes all core features, and the target platform is .NET Standard 2.0. It fits almost all situations.
ReactiveProperty.Core 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 The package includes EventToReactiveProperty and EventToReactiveCommand for WPF. This is for .NET Core 3.0 or later and .NET Framework 4.7.2 or later.
ReactiveProperty.UWP The package includes EventToReactiveProperty and EventToReactiveCommand for UWP.
ReactiveProperty.XamarinAndroid The package includes many extension methods to create IObservable from events for Xamarin.Android native.
ReactiveProperty.XamariniOS 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 Versions
.NET net5.0 net5.0-windows net6.0 net6.0-android net6.0-ios net6.0-maccatalyst net6.0-macos net6.0-tvos net6.0-windows
.NET Core netcoreapp2.0 netcoreapp2.1 netcoreapp2.2 netcoreapp3.0 netcoreapp3.1
.NET Standard netstandard2.0 netstandard2.1
.NET Framework net461 net462 net463 net47 net471 net472 net48
MonoAndroid monoandroid
MonoMac monomac
MonoTouch monotouch
Tizen tizen40 tizen60
Xamarin.iOS xamarinios
Xamarin.Mac xamarinmac
Xamarin.TVOS xamarintvos
Xamarin.WatchOS xamarinwatchos
Compatible target framework(s)
Additional computed target framework(s)
Learn more about Target Frameworks and .NET Standard.

NuGet packages (17)

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.

Rx.Community.Extensions

Community-written extension methods to Rx

ReactiveProperty.XamarinAndroid

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

Reactive.ViewModels

Description

GitHub repositories (15)

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

Repository Stars
MathewSachin/Captura
Capture Screen, Audio, Cursor, Mouse Clicks and Keystrokes
neuecc/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 Core 3.1, .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
8.1.2 2,034 6/6/2022
8.1.2-pre202206051057 54 6/5/2022
8.1.1 1,280 5/27/2022
8.1.0 2,084 4/30/2022
8.1.0-pre202204290912 69 4/29/2022
8.1.0-pre202204290644 49 4/29/2022
8.0.5 5,076 3/24/2022
8.0.5-pre202203191529 63 3/19/2022
8.0.5-pre202203191312 55 3/19/2022
8.0.4 5,790 3/5/2022
8.0.4-pre202203040658 62 3/4/2022
8.0.3 15,064 12/5/2021
8.0.3-pre202112031043 754 12/3/2021
8.0.3-pre202112030833 718 12/3/2021
8.0.2 2,877 11/21/2021
8.0.1 387 11/20/2021
8.0.1-pre202111200140 454 11/20/2021
8.0.0 3,350 11/9/2021
8.0.0-pre202111090825 133 11/9/2021
8.0.0-pre202110240626 633 10/24/2021
8.0.0-pre202110161410 273 10/16/2021
8.0.0-pre202110160852 154 10/16/2021
8.0.0-pre202110160831 177 10/16/2021
8.0.0-pre202110131323 170 10/13/2021
8.0.0-pre202110071401 207 10/7/2021
8.0.0-pre202110060758 203 10/6/2021
8.0.0-pre202110060735 124 10/6/2021
8.0.0-pre202109190434 299 9/19/2021
8.0.0-pre202109160117 209 9/16/2021
8.0.0-pre202108141424 282 8/14/2021
8.0.0-pre202107040319 677 7/4/2021
7.12.0 18,221 8/6/2021
7.11.0 9,804 5/31/2021
7.10.0 6,493 4/29/2021
7.9.0 7,509 4/20/2021
7.8.3 7,135 3/24/2021
7.8.2 375 3/23/2021
7.8.1 2,138 3/11/2021
7.8.1-pre202103031133 285 3/3/2021
7.8.0 4,819 2/21/2021
7.8.0-pre202102210255 199 2/21/2021
7.8.0-pre202102201703 197 2/20/2021
7.7.1 801 2/19/2021
7.7.1-pre202102190925 210 2/19/2021
7.7.0 7,748 1/26/2021
7.6.1 2,139 1/15/2021
7.6.0 166,258 1/13/2021
7.5.1 22,461 10/19/2020
7.5.0 592 10/17/2020
7.5.0-pre202010141113 303 10/14/2020
7.4.1 11,852 9/23/2020
7.4.0 1,179 9/18/2020
7.3.0 606 9/17/2020
7.2.1 15,111 9/11/2020
7.2.0 32,664 8/4/2020
7.1.0 49,068 5/26/2020
7.1.0-pre202005251107 359 5/25/2020
7.0.1 2,290 5/14/2020
7.0.1-pre202005131606 318 5/13/2020
7.0.0 3,807 5/5/2020
7.0.0-ci20200503102823 354 5/3/2020
7.0.0-ci20200503100450 336 5/3/2020
6.2.0 20,876 1/17/2020
6.1.4 13,612 11/16/2019
6.1.3 16,315 9/26/2019
6.1.2 10,850 8/31/2019
6.0.3 7,438 7/26/2019
5.6.0 85,456 6/20/2019
5.5.1 34,532 5/22/2019
5.4.0 7,221 4/3/2019
5.4.0-pre1 788 4/3/2019
5.3.2 24,527 12/14/2018
5.3.1 1,325 12/13/2018
5.3.0 47,009 9/28/2018
5.2.0 10,675 8/2/2018
5.1.1 4,258 6/21/2018
5.0.0 4,024 6/3/2018
4.2.2 63,925 4/20/2018
4.2.1 4,102 3/17/2018
4.2.0 8,952 1/28/2018
4.1.1 2,249 1/20/2018
4.1.0 1,527 1/18/2018
4.0.1-pre1 1,143 1/14/2018
4.0.0 4,299 1/8/2018
4.0.0-pre5 1,163 1/6/2018
4.0.0-pre4 2,057 10/21/2017
4.0.0-pre3 1,658 6/16/2017
3.6.0 24,459 3/27/2017
3.5.1 19,155 3/3/2017
3.5.0 3,470 2/15/2017
3.4.0 5,043 11/30/2016
3.3.2 2,050 11/21/2016
3.3.1 2,412 11/15/2016
3.2.0 24,152 10/10/2016
3.1.0 1,482 10/7/2016
3.0.1 4,243 8/13/2016
3.0.0 8,140 8/12/2016
3.0.0-pre5 1,250 7/20/2016
3.0.0-pre4 1,321 7/9/2016
3.0.0-pre3 1,218 7/9/2016
3.0.0-pre2 1,168 7/9/2016
3.0.0-pre1 1,319 7/6/2016
2.9.0 9,588 7/20/2016
2.8.0 3,213 7/2/2016
2.7.4 2,005 6/24/2016
2.7.3.1 1,894 6/16/2016
2.7.3 2,207 6/6/2016
2.7.2 4,704 4/23/2016
2.7.1 2,417 4/9/2016
2.7.0 1,300 4/8/2016
2.6.2 1,559 4/2/2016
2.6.1 1,267 4/2/2016
2.6.0 1,557 3/24/2016
2.6.0-beta1 1,688 2/29/2016
2.5.0 5,668 2/7/2016
2.4.2 2,967 1/10/2016
2.4.1 2,224 12/25/2015
2.4.0 1,369 12/23/2015
2.4.0-pre3 1,242 12/23/2015
2.4.0-pre2 1,243 12/23/2015
2.4.0-pre1 1,249 12/22/2015
2.3.1 1,679 12/18/2015
2.3.0.1 2,021 12/4/2015
2.3.0 1,999 12/1/2015
2.3.0-pre4 1,524 11/27/2015
2.3.0-pre3 1,464 11/26/2015
2.3.0-pre2 1,415 11/26/2015
2.3.0-pre 1,444 11/25/2015
2.2.8.1-pre 1,281 11/24/2015
2.2.8 2,054 11/10/2015
2.2.7.1 1,829 10/26/2015
2.2.7 1,289 10/26/2015
2.2.6.1 1,699 10/12/2015
2.2.6 1,391 10/9/2015
2.2.5 2,573 10/1/2015
2.2.4 1,870 9/11/2015
2.2.3.1 2,362 8/28/2015
2.2.3 1,330 8/27/2015
2.2.2 1,954 7/20/2015
2.2.1 1,932 6/28/2015
2.2.0 2,970 4/24/2015
2.1.8.2 1,621 4/2/2015
2.1.8.1 1,533 3/16/2015
2.1.7 1,388 3/14/2015
2.1.6 1,296 3/14/2015
2.1.5 1,324 3/12/2015
2.1.3 1,318 3/10/2015
2.1.2 1,328 3/8/2015
2.1.1 1,308 3/7/2015
2.1.0 1,877 2/25/2015
2.0.1 1,827 2/23/2015
2.0.0 1,648 2/23/2015
2.0.0-pre8 1,645 2/23/2015
2.0.0-pre7 1,649 2/22/2015
2.0.0-pre6 1,628 2/22/2015
2.0.0-pre5 1,642 2/22/2015
2.0.0-pre4 1,552 2/22/2015
2.0.0-pre3 1,566 2/22/2015
2.0.0-pre2 3,482 2/18/2015
2.0.0-pre1 1,553 2/17/2015
1.2.1 1,742 2/21/2015
1.2.0 1,562 2/17/2015
1.1.2 3,311 2/8/2015
1.1.1.2 1,428 2/6/2015
1.1.1.1 2,148 10/19/2014
1.1.1 1,364 10/19/2014
1.1.0 1,603 10/13/2014
1.1.0-beta2 1,245 10/11/2014
1.1.0-beta1 1,235 10/11/2014
1.0.3.1 1,541 10/10/2014
1.0.3 1,560 10/9/2014
1.0.2.2 1,392 10/5/2014
1.0.2 1,436 9/27/2014
1.0.1.1 1,359 9/27/2014
1.0.1 1,381 9/27/2014
1.0.0.2 1,526 9/4/2014
1.0.0.1 1,389 9/4/2014
1.0.0 1,543 9/4/2014
0.4.5.1 1,818 6/3/2014
0.4.5 1,693 5/7/2014
0.4.5-beta3 1,231 5/6/2014
0.4.5-beta2 1,653 5/6/2014
0.4.5-beta1 1,218 5/6/2014
0.4.4.3 1,502 5/4/2014
0.4.4.2 1,548 5/3/2014
0.4.4.1 1,433 5/3/2014
0.4.4 1,388 5/3/2014
0.4.3.1 1,402 4/30/2014
0.4.2.1 1,901 4/12/2014
0.4.2 1,968 4/11/2014
0.4.2-beta5 1,812 4/11/2014
0.4.2-beta4 1,865 4/11/2014
0.4.2-beta3 1,308 4/4/2014
0.4.2-beta2 1,304 4/4/2014
0.4.2-beta1 1,301 4/1/2014
0.4.1 1,481 2/2/2014
0.4.0.1 1,382 12/31/2013
0.4.0-rc1 1,265 12/16/2013
0.3.2 3,238 11/24/2011
0.3.1 1,573 11/21/2011
0.3.0 1,567 11/20/2011
0.2.0 1,785 10/17/2011
0.1.0 1,712 10/6/2011