In order to integrate Diagramming for Blazor into your Visual Studio project, select the Manage Nuget Packages from Project menu:

Open the Browse tab, and enter MindFusion.Diagramming.Blazor in the search field. Select the MindFusion.Diagramming.Blazor package and click Install.

Once the package is installed, you should be able to add components from the library to your UI (DiagramView, NodeListView, etc).