How do I: Programmatically build SQLCommand to Read, Save, Delete.

Question

Hello:
 
I would like to programmatically build an sql command to Read, Save and Delete records.
 
My sample table has the following fields: SEQNO, Company_ID, Name, Address_1, Address_2, Address_3. SEQNO is auto-incremetal. The others are just strings.
 
 
I know its just a few fields and I can just type it and put it in the program, but I will have a lot more fields and tables, that is why I want to do it programmatically.