System.ObjectModel 4.3.0 Prefix Reserved

Requires NuGet 2.12 or higher.

Install-Package System.ObjectModel -Version 4.3.0
dotnet add package System.ObjectModel --version 4.3.0
<PackageReference Include="System.ObjectModel" Version="4.3.0" />
For projects that support PackageReference, copy this XML node into the project file to reference the package.
paket add System.ObjectModel --version 4.3.0
The NuGet Team does not provide support for this client. Please contact its maintainers for support.
#r "nuget: System.ObjectModel, 4.3.0"
#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 System.ObjectModel as a Cake Addin
#addin nuget:?package=System.ObjectModel&version=4.3.0

// Install System.ObjectModel as a Cake Tool
#tool nuget:?package=System.ObjectModel&version=4.3.0
The NuGet Team does not provide support for this client. Please contact its maintainers for support.

Provides types and interfaces that allow the creation of observable types that provide notifications to clients when changes are made to it.

Commonly Used Types:
System.Collections.ObjectModel.KeyedCollection<TKey, TItem>
System.Collections.ObjectModel.ReadOnlyDictionary<TKey, TValue>

When using NuGet 3.x this package requires at least version 3.4.

NuGet packages (199)

Showing the top 5 NuGet packages that depend on System.ObjectModel:

Package Downloads

Provides classes, interfaces and enumerations that enable language-level code expressions to be represented as objects in the form of expression trees. Commonly Used Types: System.Linq.IQueryable<T> System.Linq.IQueryable System.Linq.Expressions.Expression<TDelegate> System.Linq.Expressions.Expression System.Linq.Expressions.ExpressionVisitor When using NuGet 3.x this package requires at least version 3.4.


A set of standard .NET APIs that are prescribed to be used and supported together. 18a36291e48808fa7ef2d00a764ceb1ec95645a5 When using NuGet 3.x this package requires at least version 3.4.


Provides classes and interfaces that support the Dynamic Language Runtime (DLR). Commonly Used Types: System.Runtime.CompilerServices.CallSite System.Runtime.CompilerServices.CallSite<T> System.Dynamic.IDynamicMetaObjectProvider System.Dynamic.DynamicMetaObject System.Dynamic.SetMemberBinder System.Dynamic.GetMemberBinder System.Dynamic.ExpandoObject System.Dynamic.DynamicObject System.Runtime.CompilerServices.CallSiteBinder System.Runtime.CompilerServices.ConditionalWeakTable<TKey, TValue> When using NuGet 3.x this package requires at least version 3.4.


re-linq Frontend: A foundation for parsing LINQ expression trees and generating queries in SQL or other languages. Key features: - Transforms expression trees into abstract syntax trees resemblying LINQ query expressions (from ... select syntax) - Simplifies many aspects of this tree (sub queries, transparent identifieres, pre-evaluation ...) - Provides basic infrastructure for backend development (e.g. SQL generation) - Provides a framework for user-defined query extensions and transformations


Provides extensions methods that improve interoperation between managed code and the Windows Runtime. Commonly Used Types: System.WindowsRuntimeSystemExtensions System.IO.WindowsRuntimeStorageExtensions System.IO.WindowsRuntimeStreamExtensions System.Runtime.InteropServices.WindowsRuntime.AsyncInfo System.Runtime.InteropServices.WindowsRuntime.WindowsRuntimeBuffer When using NuGet 3.x this package requires at least version 3.4.

GitHub repositories (201)

Showing the top 5 popular GitHub repositories that depend on System.ObjectModel:

Repository Stars
Json.NET is a popular high-performance JSON framework for .NET
微信全平台 SDK Senparc.Weixin for C#,支持 .NET Framework 及 .NET Core、.NET 6.0。已支持微信公众号、小程序、小游戏、企业号、企业微信、开放平台、微信支付、JSSDK、微信周边等全平台。 WeChat SDK for C#.
Experience, Learn and Code the latest breakthrough innovations with Microsoft AI
Sample apps built using the Xamarin.Forms framework
Emby Server is a personal media server with apps on just about every device.
Version Downloads Last updated
4.3.0 314,871,728 11/15/2016
4.3.0-preview1-24530-04 305,590 10/24/2016
4.0.12 273,401,823 6/27/2016
4.0.12-rc2-24027 13,567,445 5/16/2016
4.0.11-beta-23516 175,443 11/18/2015
4.0.11-beta-23409 22,251 10/15/2015
4.0.11-beta-23225 102,441 9/2/2015
4.0.10 2,424,087 7/29/2015
4.0.10-beta-23109 99,466 7/27/2015
4.0.10-beta-23019 51,917 6/30/2015
4.0.10-beta-22816 65,283 4/24/2015
4.0.10-beta-22605 10,636 2/13/2015
4.0.10-beta-22416 7,929 1/16/2015
4.0.10-beta-22231 56,347 11/11/2014
4.0.0 2,435,325 7/29/2015
4.0.0-beta-23109 51,667 7/27/2015
4.0.0-beta-23019 67,443 6/30/2015