private void AddTabItemViewModel()
{
var vm = new DirectoryTabItemViewModel();
DirectoryTabItems.Add(vm);
CurrentDirectoryTabItem = vm;
}
private void CloseTab(DirectoryTabItemViewModel vm)
{
var isCurrent = CurrentDirectoryTabItem == vm;
DirectoryTabItems.Remove(vm);
if (isCurrent)
{
CurrentDirectoryTabItem = DirectoryTabItems.LastOrDefault();
}
}