将对象转换为列表<String>

Question

I am getting the List of selected Items from WPF Attached Behavioral for ListBox as below:

  private void ListBoxSelectionChanged(object param)
    {
        var selectedItems = param;
        SelectedMItems = selectedItems.ToString().Split(',').ToList<string>();
        //Console.WriteLine(selectedItems.ToString());

    }

Though it works , is there any other better way.

Answer 1

The SelectedItems property is an IList , so I'm assuming your object is as well.

In this case, it would be simplest to do one of these two:

// If the list already contains strings
SelectedMItems = ((IList)selectedItems).Cast<string>().ToList();

// If the list contains other objects
SelectedMItems = ((IList)selectedItems).Cast<object>().Select(o => o.ToString()).ToList();

Answer 2

Something like this might work, in order to be 'safer':

var items = param as ObservableCollection<string>;

Or even just an enumerable:

var items = param as IEnumerable<string>;

Then you have a collection of items proper.