End Google Ads 201810 - BS.net 01 --> I have a Winform with some textboxes and comboboxes to search values from sqlserver,
i need to recognize when my fields are empty and users dont input anything and by mean they dont need fields,and i have to know they dont want a field or this field is a null
i am looking for the best way to handle null values in textboxes and comboboxes in c#

thanks