If you are using , the legacy DLL may throw errors. Use the DotNetProjects version mentioned in Section 1 instead. Missing Themes
The toolkit was officially "absorbed" into various community-maintained NuGet packages. The most stable version is: DotNetProjects.WpfToolkit.DataVisualization
The original package ID is typically System.Windows.Controls.DataVisualization.Toolkit . 2. Manual Installation via Visual Studio If you are using , the legacy DLL may throw errors
Finding and implementing the System.Windows.Controls.DataVisualization.Toolkit.dll is a common task for WPF developers looking to add charting capabilities to their applications. This library, originally part of the WPF Toolkit, remains a popular choice for creating bar, pie, and line charts.
Once the DLL is referenced, you must tell your XAML file where to find the charting controls. Add the following namespace mapping to your Window or UserControl tag: The most stable version is: DotNetProjects
Supports Line, Bar, Column, Pie, Scatter, and Area charts.
Rebuild your solution. If it persists, check that the assembly name in your xmlns declaration matches the actual filename of the DLL. Framework Compatibility This library, originally part of the WPF Toolkit,
While you can find standalone DLL files on various third-party websites, the safest and most reliable way to get the library is through . Option A: The Modern Way (Recommended)