public ShellViewModel()
{
var canExecute = this.WhenAnyValue(vm => vm.EnteredText)
.Select(s => !string.IsNullOrWhiteSpace(s));
Child = new ChildViewModel();
OKCmd = ReactiveCommand.Create(canExecute);
OKCmd.Subscribe(_ => Child.Name = "You entered " + EnteredText);
}
public HomeViewModel()
{
//Define conditions
var okCmdObs = this.WhenAny(vm => vm.EnteredText,
s => !string.IsNullOrWhiteSpace(s.Value));
//Create conditions
OKCmd = ReactiveCommand.Create(okCmdObs);
//Update Status
OKCmd.Subscribe(_ => Status = EnteredText + " is saved.");
}