How to come true through Textbox to the database update (Update) operate him dish bird to seek solution

For instance I have Test of a database now, have one Zhang Biao Student then, face of exterior and interior has 4 kinds, it is Sno respectively, sname, ssex, scity already had a record
I want to come true, part through 4 TextBox correspondence lists a value to alter a record to exterior and interior
How to come true
Had better be C#It is not OK to use Sql statement. Very of the foundation, you look for a Demo to be done accordingly to Msdn, seek kind of implementation database operation of Ado.netVery of the foundation, you look for a Demo to be done accordingly to Msdn, seek kind of implementation database operation of Ado.netVery of the foundation, you look for a Demo to be done accordingly to Msdn, seek kind of implementation database operation of Ado.netUpdate statement is nice