WPFToolkit.DataVisualization 3.5.50211.1

.NET Framework 
dotnet add package WPFToolkit.DataVisualization --version 3.5.50211.1
NuGet\Install-Package WPFToolkit.DataVisualization -Version 3.5.50211.1
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="WPFToolkit.DataVisualization" Version="3.5.50211.1" />
For projects that support PackageReference, copy this XML node into the project file to reference the package. 
paket add WPFToolkit.DataVisualization --version 3.5.50211.1
#r "nuget: WPFToolkit.DataVisualization, 3.5.50211.1"
#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 WPFToolkit.DataVisualization as a Cake Addin
#addin nuget:?package=WPFToolkit.DataVisualization&version=3.5.50211.1

// Install WPFToolkit.DataVisualization as a Cake Tool
#tool nuget:?package=WPFToolkit.DataVisualization&version=3.5.50211.1

The WPF Toolkit is a collection of WPF features and components that are being made available outside of the normal .NET Framework ship cycle. The WPF Toolkit not only allows users to get new functionality more quickly, but allows an efficient means for giving feedback to the product team. Many of the features will be released with full source code as well. The Toolkit Roadmap outlines some of the upcoming features we have planned.

Product Compatible and additional computed target framework versions.
.NET Framework net is compatible. 
Compatible target framework(s)
Included target framework(s) (in package)
Learn more about Target Frameworks and .NET Standard.

GitHub repositories

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Version Downloads Last updated
3.5.50211.1 7,625 1/14/2012

What's new in the WPF Toolkit February 2010 Release?
AutoCompleteBox
Accordion
Rating
Bug fixes
Bug fixes for common issues, including:
DataGrid - Templating, multiple selection, runtime sorting, etc.
Calendar/DatePicker - Styling, default values, focus related issues, etc.
VSM - Generated transitions
UI Automation - Mostly DataGrid UI automation fixes and a few for Calendar/DatePicker

Also new in the February release, we are introducing the concept of Quality Bands to rate the quality of the controls and features in the release.
Components in the Stable Quality Band
DataGrid
DatePicker
Calendar
VisualStateManager
Components in the Preview Quality Band
Chart Controls
AutoCompleteBox
Accordion
Rating