public void Execute(object parameter) { var dlg = new CommonOpenFileDialog { Title = "Selecteer locatie", IsFolderPicker = true, InitialDirectory = viewModel.ExportLocation, AddToMostRecentlyUsedList = false, AllowNonFileSystemItems = false, DefaultDirectory = viewModel.ExportLocation, EnsureFileExists = true, EnsurePathExists = true, EnsureReadOnly = false, EnsureValidNames = true, Multiselect = false, ShowPlacesList = true }; if (dlg.ShowDialog() == CommonFileDialogResult.Ok) { viewModel.ExportLocation = dlg.FileName; viewModel.OnPropertyChanged(nameof(viewModel.ExportLocation)); } }