viewmodel ins wpf gepackt, build failed

DaSaSo.Wpf/ViewModel/Commands/EditClientCommand.cs

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+using DaSaSo.Domain.Model;
+using DaSaSo.Domain.Services;
+using DaSaSo.Wpf.ViewModel.Interface;
+using System.ComponentModel;
+using System.Threading.Tasks;
+
+namespace DaSaSo.Wpf.ViewModel.Commands
+{
+    public class EditClientCommand : AsyncCommandBase
+    {
+        private readonly IDataService<Client> dataservice;
+        private readonly IActualProject actualProject;
+        private readonly IRenavigator renavigator;
+        private readonly ClientListViewModel _clientListViewModel;
+
+        public override bool CanExecute(object? parameter)
+        {
+            return _clientListViewModel.CanSelectClient;
+        }
+
+        public EditClientCommand(IDataService<Client> dataservice, IActualProject actualProject,IRenavigator renavigator, ClientListViewModel clientListViewModel)
+        {
+            this.dataservice = dataservice;
+            this.actualProject = actualProject;
+            this.renavigator = renavigator;
+            this._clientListViewModel = clientListViewModel;
+            _clientListViewModel.PropertyChanged += _clientListViewModel_PropertyChanged;
+            
+        }
+
+        private void _clientListViewModel_PropertyChanged(object? sender, PropertyChangedEventArgs e)
+        {
+            if(e.PropertyName == nameof(_clientListViewModel.CanSelectClient))
+            {
+                OnCanExecuteChanged();
+            }
+        }
+
+        public override async Task ExecuteAsync(object? parameter)
+        {
+            actualProject.SetClient(_clientListViewModel.SelectedClient);
+            renavigator.Renavigate();
+        }
+    }
+}