reactiveui

问题 Lets say I have this enum public enum LogType { None = 0, File = 1, Folder = 2 } I have this ComboBox in view <ComboBox Name="CustomLogLogType" FontSize="10" MinHeight="20" Height="20" SelectedItem="{Binding LogType}"> Then a ViewModel like so public class CustomLogRuleItemViewModel : ReactiveObject { [Reactive] public LogType LogType { get; set; } = LogType.File; public List<LogType> LogTypes => Enum.GetValues(typeof(LogType)).Cast<LogType>().Where(_ => _ != LogType.None).ToList(); } Then in

问题 I'm continuing ReactiveUI explorations on Windows Phone, and have came to a moment where I need to do a navigation between pages. Obviously, I want to do this with the ReactiveUI. Unfortunately, googling (and binging) around didn't give any samples on that. The most useful thing I was able to find is "Play for Windows" on GitHub, which have the routing implemented. But I don't think that technique could apply to the Windows Phone programming, since navigation between WP pages is very

问题 I've done a few WPF projects now and see the same problem pop up and that is the "problem" of aggregating/combining dependency properties (dp's). For example, I have 10 dp's of type bool that I want to combine and expose as a seperated dp. The combined dp is true unless one or more its constituents is false. I currently do this using the addValueChanged which registers a callback for each of the 10 (!() dp's but am wondering if there are more elegant solutions or maybe a framework that

问题 I've done a few WPF projects now and see the same problem pop up and that is the "problem" of aggregating/combining dependency properties (dp's). For example, I have 10 dp's of type bool that I want to combine and expose as a seperated dp. The combined dp is true unless one or more its constituents is false. I currently do this using the addValueChanged which registers a callback for each of the 10 (!() dp's but am wondering if there are more elegant solutions or maybe a framework that

问题 I have a 'hello world' form (Xamarin forms) with some fields and a submit button. There's an observable (CanSave) which controls when the SaveChangesCommand can execute. If the save button is pressed when the CanSave is false, I want to a display a message to the user. With the code below, if I enter incorrect data click save (the error message shows) then correct the data. CanSave becomes true and SaveChangesCommand is executed - before the button is hit again. It's as though the previously

问题 Just dabbling with RxUI and trying to get a noddy example to work... I've got a WPF view with a ListBox and a button. When I press the button (Go) I want to run a method on a background thread and have the results it produces be added to the ListBox. I'm logging the thread id to check what's executing where. The problem is I always see all the operations happening on the same thread. I've tried specifying Scheduler.Default on the CreateAsyncObservable but then nothing gets added to the

问题 Just dabbling with RxUI and trying to get a noddy example to work... I've got a WPF view with a ListBox and a button. When I press the button (Go) I want to run a method on a background thread and have the results it produces be added to the ListBox. I'm logging the thread id to check what's executing where. The problem is I always see all the operations happening on the same thread. I've tried specifying Scheduler.Default on the CreateAsyncObservable but then nothing gets added to the

问题 Perhaps I'm missing something, however I can't get ReactiveCommand to prevent execution based on the canExecute observable. Below is the simplest example I can conjure. I would expect the command to never fire, however it is. What am I missing? void Main() { var canExecute = Observable.Return(false); var myCommand = ReactiveCommand.CreateAsyncTask(canExecute, m => functions.doAllThings(m)); myCommand.Subscribe(x=>"executing".Dump()); myCommand.Execute("Tom"); // This fires the command. I

问题 I have a ViewModel with some ReactiveCommands that user can invoke manually. CommandA CommandB CommandC So the user can invoke only B , or A first, and then C . The problem is that there is that I want to create another command that runs them in order , from A to C. They shouldn't run in parallel, but sequentially . How can I do a command of the given characteristics? 回答1: Import System.Reactive.Linq, now you can: { await CommandA.Execute(); await CommandB.Execute(); await CommandC.Execute();

问题 In my Xamarin Mac project, I am seeing the following warning multiple times. I tried clearing the nuget cache, but it did not help me. Why is it shown and what is required to get it fixed? 来源： https://stackoverflow.com/questions/53452050/get-rid-of-xamarins-you-may-need-to-supply-runtime-policy-warning