View Service

gistfile1.cs

public class UIViewService : IUIViewService
    {
        readonly IRegionManager _regionManager;

        public UIViewService(IRegionManager regionManager)
        {
            _regionManager = regionManager;
        }

        public void ActivateNewOrExistingViewInContentItem(UIElement view, string viewName, string regionName)
        {
            var workspaceRegion = _regionManager.Regions[regionName];
            var existingView = workspaceRegion.GetView(viewName) as UIElement;

            if (existingView == null)
            {
                workspaceRegion.Add(view, viewName);
                workspaceRegion.Activate(view);
            }
            else
            {
                workspaceRegion.Activate(existingView);
            }
        }

        public void CloseView(UIElement view, string viewName, string regionName)
        {
            var workspaceRegion = _regionManager.Regions[regionName];
            var existingView = workspaceRegion.GetView(viewName) as UIElement;

            if (existingView == null)
            {
                return;
            }
            else
            {
                workspaceRegion.Remove(view);
            }
        }

    }