We are developing an application in WPF using MVVMLight. We are working on creating a form where multiple Roles can be assigned to a user. The roles are displayed in a grid having checkboxes so that user can select roles from Grid. During user editing, the existing roles should come preselected in the grid. We do not have any property which can be bound to checkboxes in Grid. We are not sure how to implement this. Please suggest some idea to implement the above functionality.