Remove combobox item from combobox WPF

How to delete combobox item? i tried this code but it does not work.

  private void btnAdd_Click(object sender, RoutedEventArgs e)
    {
 foreach (var item in cbRooms.Items)
                {
                    if (((ComboBoxItem)item).Content.ToString() == cbRooms.Text.ToString())
                    {
                        cbRo开发者_StackOverflow中文版oms.Items.Remove(((ComboBoxItem)item).Content.ToString());
                    }
                }}

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Instead of trying to remove a string try:

cbRooms.Items.Remove((ComboBoxItem)item))

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Try removing the ComboBoxItem rather than:

(ComboBoxItem)item).Content.ToString()

Try:

(item)

You may also need to refresh the combo box control after you remove the item:

cbRooms.Items.Refresh();

UPDATE

You could try what kzen said in the comments of the OP. Use a List<ComboBoxItem> to store your items, and perform the add/remove operations on the List. Then bind the list to your ComboBox:

cbRooms.ItemsSource = comboBoxItemList;

Then when you do your operations on the List call the refresh:

cbRooms.Items.Refresh();