Just create class file with th table name and have the fields of the table as the private members of the class.
Say you are having a table with the name Employee and you are having EmpID and EmpName as the field name, just create a class as follows
Class Employee
{
Private int EmpID { get; set; }
private string EmpName { get;set}
}
In the code behind, just create a object for the class and assign a value to the members of the class.
Employee oEmp = new Employee();
oEmp.EmpID= ID // just assign the value.
Finally pass the class to the logical layer and u can do what ever u want in it.
Happy Coding.