Shos.UndoRedoList 1.0.3

.NET Standard 2.0
NuGet\Install-Package Shos.UndoRedoList -Version 1.0.3
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.
dotnet add package Shos.UndoRedoList --version 1.0.3
<PackageReference Include="Shos.UndoRedoList" Version="1.0.3" />
For projects that support PackageReference, copy this XML node into the project file to reference the package.
paket add Shos.UndoRedoList --version 1.0.3
#r "nuget: Shos.UndoRedoList, 1.0.3"
#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 Shos.UndoRedoList as a Cake Addin
#addin nuget:?package=Shos.UndoRedoList&version=1.0.3

// Install Shos.UndoRedoList as a Cake Tool
#tool nuget:?package=Shos.UndoRedoList&version=1.0.3


List and ObservableCollection which support undo/redo.


You can install Shos.UndoRedoList to your project with NuGet on Visual Studio.

Package Manager

PM>Install-Package Shos.UndoRedoList -version 1.0.3


>dotnet add package Shos.UndoRedoList --version 1.0.3


<PackageReference Include="Shos.UndoRedoList" Version="1.0.3" />


Types for collection which supports undo/redo.

Tests for Shos.UndoRedoList.

Performance tests for Shos.UndoRedoList.

Sample WPF app for UndoRedoObservableCollection.



class UndoRedoList<TElement, TList> : IList<TElement> where TList : IList<TElement>, new()

IList implemented collection which supports undo/redo.

class UndoRedoList<TElement> : IList<TElement> where TList : IList<TElement>, new()

List implemented collection which supports undo/redo.

class UndoRedoObservableCollection<TElement> : UndoRedoList<TElement, ObservableCollection<TElement>>, INotifyCollectionChanged

ObservableCollection which supports undo/redo.

class RingBuffer<TElement> : IEnumerable<TElement>

Circular buffer - Wikipedia

In computer science, a circular buffer, circular queue, cyclic buffer or ring buffer is a data structure that uses a single, fixed-size buffer as if it were connected end-to-end. This structure lends itself easily to buffering data streams.

class UndoRedoRingBuffer<TElement> : RingBuffer<TElement>

Specialized RingBuffer for undo/redo.

struct ModuloArithmetic : IEquatable<ModuloArithmetic>

Modular arithmetic - Wikipedia

In mathematics, modular arithmetic is a system of arithmetic for integers, where numbers "wrap around" when reaching a certain value, called the modulus.

static class EnumerableExtensions

Extension methods for IEnumerable.

Class diagram

*.puml files in Shos.UndoRedoList/Documents/ClassDiagrams are class diagram for PlantUML.

The following image is a class diagram made from these *.puml files.

Shos.UndoRedoList class diagram

Larger class diagram image is here.


See: Shos.UndoRedoList.SampleApp

Author Info

Fujio Kojima: a software developer in Japan

  • Microsoft MVP for Development Tools - Visual C# (Jul. 2005 - Dec. 2014)
  • Microsoft MVP for .NET (Jan. 2015 - Oct. 2015)
  • Microsoft MVP for Visual Studio and Development Technologies (Nov. 2015 - Jun. 2018)
  • Microsoft MVP for Developer Technologies (Nov. 2018 - Jun. 2021)
  • MVP Profile
  • Blog (Japanese)
  • Web Site (Japanese)
  • Twitter
  • Instagram


This library is under the MIT License.

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.
  • .NETStandard 2.0

    • No dependencies.

NuGet packages

This package is not used by any NuGet packages.

GitHub repositories

This package is not used by any popular GitHub repositories.

Version Downloads Last updated
1.0.3 261 12/10/2020
1.0.2 272 12/9/2020
1.0.1 189 12/8/2020
1.0.0 227 12/8/2020