After you have set the transaction object for your DataWindow control, you can use the Retrieve method to retrieve data from the database into that control:
dw_emp.Retrieve( )
The Web DataWindow server component has a second form of the method, RetrieveEx, for use when the method requires arguments. For more information about retrieving data with the Web DataWindow, see “Specifying the database connection and retrieving data” and “Passing page-specific data to the reloaded page”.