How do I set up MVVM to close a ProWindow from the ViewModel

Question

I have a ProWindow dialog that has two buttons.  One Button needs to just close the ProWindow and the other button needs to attempt to do an action and if it is successful it needs to close the ProWindow.  I would use this.Close() if my buttons were implemented directly in the xaml class of the ProWindow, but I want to use MVVM and want to bind these buttons to the ViewModel and ICommand and RelayCommand.  How do I set up the binding so that the button code within the ViewModel class will be able to close the ProWindow?.

Wolf · Accepted Answer

Here is a sample that implements a ProWindow using MVVM: Esri/arcgis-pro-sdk-community-samples: ArcGIS Pro SDK for Microsoft .NET Framework Community Samples (github.com)