public RemotePageViewModel(RemoteDataService remoteDataService)
{
_remoteDataService = remoteDataService;
WorkItems = new ObservableRangeCollection <WorkItemViewModel>();
RunAllCommand = new RelayCommand(() => WorkItems.Apply(x => x.RunCommand.Execute(null)));
CancelAllCommand = new RelayCommand(() => WorkItems.Apply(x => x.CancelCommand.Execute(null)));
}
public static void UpdateCollectionTest()
{
var viewModelFactoryService = Dependencies.Container.Resolve <IViewModelFactoryService>();
ChatMessageViewModel CreateViewModel(ChatMessageModel model)
{
var vm = viewModelFactoryService.ResolveViewModel <ChatMessageViewModel>();
vm.UpdateMessageModel(model);
return(vm);
}
var col1 = new ObservableRangeCollection <ChatMessageViewModel>
{
CreateViewModel(new ChatMessageModel {
Body = "1", Id = "1"
}),
CreateViewModel(new ChatMessageModel {
Body = "2", Id = "2"
}),
null,
null,
null,
CreateViewModel(new ChatMessageModel {
Body = "3", Id = "3"
}),
};
var col2 = new List <ChatMessageViewModel>
{
CreateViewModel(new ChatMessageModel {
Body = "22", Id = "2"
}),
null,
CreateViewModel(new ChatMessageModel {
Body = "333", Id = "3"
}),
CreateViewModel(new ChatMessageModel {
Body = "4", Id = "4"
}),
};
var messagesToDelete = col1.Except(col2).ToList();
messagesToDelete.AddRange(col1.Where(x => x == null));
col1.RemoveRange(messagesToDelete);
col1.Apply(x => x.UpdateMessage(col2.FirstOrDefault(x.Equals)));
col1.AddRange(col2.Except(col1).Where(x => x != null));
}