CHECKEDLISTBOX should be extended by ListBox? But when you are using, it may be found - it does not support the DataSource property, which cannot specify its data source as a DataTable like ListBox.
In fact, CheckedListBox has a DataSource property like Listbox, the displaymember and the valuememeber attribute are all, just
IntelliSense cannot unfold its intelligence.
MSDN:
This Property Supports the .NET Framework INFRASTRUCTURE AND IS Not Intended To Be Used Directly from your code.
