Connecting CEdit to database field

Well derive a class from CEdit, give it a member variable which is a CRecordset (or similar), and a few member functions - one which accepts a connection string in SQL for instance.  Catch OnLoseFocus event and update the database/recordset with the altered text.  to It really depends on your needs.

Is there only going to be one edit control in your application that connects?  Give it a CDatabase.

Are there going to be lots of edits connecting to a database?  Give them each a recordset and connect them to a common CDatabase.

Are you only going to be viewing text, or will you need to handle booleans and integers and dates etc? You'll need some validation, or else you'll get lots of "update failed" notifications from the database, which wouldn't be best practice.

This is only the beginning.  You're asking a lot - perhaps you'd like to narrow it down a bit?

Hi,
im not developing a new application, im developing an ActiveX control inhirited from CEdit, and i want my control to acts like the TextBox that exist in Visual basic according to any data control exist in the form.

If your application connects to a database through a recordset you go to class wizzard , member variables tab and and map the recordset field to the edit box.