"DEVEXP"
===========
Dear Sir,
Let me do it for you !
Have 7 years experienced in C# .Net development, especially within DEV Express controls.
I have read your requirement PDF, its able to be done for you.
Define multiple column in DevExpress ComboBox, enable search and add delete button for edit form, so you can delete selected item, also improve performance if able.
I can do it for you, please discuss with me via message inbox.
Hope to get work for you on this project and keep good relationship for future jobs.
Thanks and Best Regards.