private int AddInternal(object item)
{
if (item is null)
{
throw new ArgumentNullException(nameof(item));
}
int index = -1;
if (!_owner._sorted)
{
InnerList.Add(new Entry(item));
}
else
{
Entry entry = item is Entry entryItem ? entryItem : new Entry(item);
index = InnerList.BinarySearch(index: 0, Count, entry, this);
if (index < 0)
{
index = ~index; // getting the index of the first element that is larger than the search value
}
Debug.Assert(index >= 0 && index <= Count, "Wrong index for insert");
InnerList.Insert(index, entry);
}
bool successful = false;
try
{
if (_owner._sorted)
{
if (_owner.IsHandleCreated)
{
_owner.NativeInsert(index, item);
}
}
else
{
index = Count - 1;
if (_owner.IsHandleCreated)
{
_owner.NativeAdd(item);
}
}
successful = true;
}
finally
{
if (!successful)
{
_ownerComboBoxAccessibleObject.ItemAccessibleObjects.Remove(InnerList[index]);
Remove(item);
}
}
return(index);
}
private int AddInternal(object item)
{
if (item is null)
{
throw new ArgumentNullException(nameof(item));
}
int index = -1;
if (!_owner._sorted)
{
InnerList.Add(item);
}
else
{
index = InnerList.BinarySearch(item, Comparer);
if (index < 0)
{
index = ~index; // getting the index of the first element that is larger than the search value
}
Debug.Assert(index >= 0 && index <= InnerList.Count, "Wrong index for insert");
InnerList.Insert(index, item);
}
bool successful = false;
try
{
if (_owner._sorted)
{
if (_owner.IsHandleCreated)
{
_owner.NativeInsert(index, item);
}
}
else
{
index = InnerList.Count - 1;
if (_owner.IsHandleCreated)
{
_owner.NativeAdd(item);
}
}
successful = true;
}
finally
{
if (!successful)
{
InnerList.Remove(item);
}
}
return(index);
}