public ContentTypeViewModel()
{
Title = "DevDays Content Types";
ContentTypes = new ObservableRangeCollection <Document>();
LoadCommand = new Command(async() => await ExecuteLoadDocumentsCommand());
MessagingCenter.Subscribe <NewContentTypePage, Document>(this, "AddContentType", async(obj, contentType) =>
{
var _contentType = contentType;
if (_contentType == null)
{
return;
}
ContentTypes.Add(_contentType);
await DataStore.AddContentTypeAsync(_contentType);
});
}