combo box and Generic list

I'm Having a list

 List<string> strArraylist = new List<string>();

i want to add to it the values of a combo bo开发者_StackOverflow中文版x ..

UPDATE: I just realize you may have been asking the opposite of what I provided below: how to added the items from a ComboBox to a List<string>. If that's the case, you could always do it like this:

List<string> strList = new List<string>();
strList.AddRange(cbx.Items.Cast<object>().Select(x => x.ToString()));

Here's an extension method I use:

public static class ControlHelper
{
    public static void Populate<T>(this ComboBox comboBox, IEnumerable<T> items)
    {
        try
        {
            comboBox.BeginUpdate();
            foreach (T item in items)
            {
                comboBox.Items.Add(item);
            }
        }
        finally
        {
            comboBox.EndUpdate();
        }
    }
}

This allows you to populate a ComboBox with any generic collection that can be enumerated. See how easy it is to call:

List<string> strList = new List<string> { "abc", "def", "ghi" };
cbx.Populate(strList);

Notice that you could also make this method non-generic, since the ComboBox.Items property is of a non-generic type (you can add any object to Items). In this case the Populate method would accept a plain IEnumerable instead of an IEnumerable<T>.