Answer Posted / venky

string cns=@"server=.\SQLEXPRESS;Database=emp;Integrated Security=SSPI";

cn=new SqlConnection(cns);

string sql = "select * from mytable";
DataSet ds = new DataSet();
SqlDataAdapter adpt=new SqlDataAdapter(sql,cn);

adpt.Fill(ds,"emp1");

.....after altering table....

sqlcommandbuilder cbdr=new sqlcommandbuilder(adpt);

adpt.Update(ds,"emp1");

your changes automaically save into databases...

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