Example one
Establish ADO reference
To use the ADO object in the Visual Basic project to access the database, a reference to the ADO object library must be established
Engineering---Reference---Microsoft ActiveX Data Object 2.5 Library
Example two
To create an ODBC data source, there are generally two ODBC (64-bit and 32-bit) on the computer, you need to find Microsoft Access
Example three
Use Microsoft ADO Data Control 6.0 (OLEDB) control
Example four
The reason for the error: no reference to the ADO object to access the database,
Change to: Dim objRs As New ADODB.Recordset
Example 5
