In the first part of this series, you learned how to add records to a database. In this article, you will learn how to search the records in a database and update them using the DataGrid control. The DataGrid is one of the most powerful, useful, and flexible controls in the .NET Framework Class Library.
The need for updating records arises when a user needs to change information such as his or her email address, telephone number, or other item that may frequently change. In order to update a record it is necessary for a user to feed in a key piece of data such as a username or Userid number. Based on this input, only the records for the specified user would be displayed on the DataGrid. After that the user can edit the entries and update them. The Grid also provides a facility to cancel the entries before updating them.
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