public void ListBoxSelectedIndexCollection_IListAdd_Invoke_ThrowsNotSupportedException(object value)
{
using var owner = new ListBox();
IList collection = new ListBox.SelectedIndexCollection(owner);
Assert.Throws <NotSupportedException>(() => collection.Add(value));
}
internal static void AddRange([NotNull] this ListBox.SelectedIndexCollection indexCollection, [NotNull] IEnumerable <int> indices)
{
if (indexCollection == null)
{
throw new ArgumentNullException("indexCollection");
}
if (indices == null)
{
throw new ArgumentNullException("indices");
}
foreach (var index in indices)
{
indexCollection.Add(index);
}
}