PRISM WPF CompositeCommand Execute 方法不起作用

Question

我有一个 moduleA 需要在 moduleB 的 ViewModel 中执行代码。所以我在我的基础设施中创建了一个 commandProxy，并在 moduleB 中注册了一个命令。当我在 proxyCommand 上调用 Execute 时，注册的命令不会执行。应该怎么调试？

模块A

commandProxy.ShowOrderCommand.Execute(""); // I can see the registered command in the debugger
//This is obtained through constructor injection

模块B

showOrderDetailsCommand = new DelegateCommand(() => { }, SubmitAllCanExecute);
commandProxy.ShowOrderCommand.RegisterCommand(showOrderDetailsCommand);

private void ShowOrderDetailsView()
        {
            _regionManager.RequestNavigate(RegionNames.SecondaryRegion, new Uri("/TradeLogView", UriKind.Relative));
        }

基础设施

private static CompositeCommand showOrderDetailsCommand = new CompositeCommand(true);

public class PostMatchCommandProxy
    {
        virtual public CompositeCommand ShowOrderCommand
        {
            get { return ShowOrderDetailsCommand; }
        }
    }

Answer 1

我错过了委托命令中的函数定义

showOrderDetailsCommand = new DelegateCommand(ShowOrderDetailsView, SubmitAllCanExecute);