by ahamedferrari (2 Submissions)
Category: Databases/Data Access/DAO/ADO
Compatability: VB 6.0
Difficulty: Unknown Difficulty
Originally Published: Thu 8th October 2009
Date Added: Mon 8th February 2021
Rating: 
(1 Votes)
The following example will illustrate how to build a relatively powerful database application using ADO data control.
VBcoders
The properties of all the controls are listed as follow:
Form Name frmBookTitle
Form Caption Book Titles -ADOApplication
ADO Name adoBooks
Label1 Name lblApp
Label1 Caption Book Titles
Label 2 Name lblTitle
Label2 Caption Title :
Label3 Name lblYear
Label3 Caption Year Published:
Label4 Name lblISBN
Label4 Caption ISBN:
Labe5 Name lblPubID
Label5 Caption Publisher's ID:
Label6 Name lblSubject
Label6 Caption Subject :
TextBox1 Name txtitle
TextBox1 DataField Title
TextBox1 DataSource adoBooks
TextBox2 Name txtPub
TextBox2 DataField Year Published
TextBox2 DataSource adoBooks
TextBox3 Name txtISBN
TextBox3 DataField ISBN
TextBox3 DataSource adoBooks
TextBox4 Name txtPubID
TextBox4 DataField PubID
TextBox4 DataSource adoBooks
TextBox5 Name txtSubject
TextBox5 DataField Subject
TextBox5 DataSource adoBooks
Command Button1 Name cmdSave
Command Button1 Caption &Save
Command Button2 Name cmdAdd
Command Button2 Caption &Add
Command Button3 Name cmdDelete
Command Button3 Caption &Delete
Command Button4 Name cmdCancel
Command Button4 Caption &Cancel
Command Button5 Name cmdPrev
Command Button5 Caption &<
Command Button6 Name cmdNext
Command Button6 Caption &>
Command Button7 Name cmdExit
Command Button7 Caption E&xit
To be able to access and manage a database, you need to connect the ADO data control to a database file. We are going to use BIBLIO.MDB that comes with VB6. To connect ADO to this database file , follow the steps below:
a) Click on the ADO control on the form and open up the properties window.
b) Click on the ConnectionString property, the following dialog box will appear.
when the dialog box appear, select the Use Connection String's Option. Next, click build and at the Data Link dialog box, double-Click the option labeled Microsoft Jet 3.51 OLE DB provider.
After that, click the Next button to select the file BIBLO.MDB. You can click on Text Connection to ensure proper connection of the database file. Click OK to finish the connection.
Finally, click on the RecordSource property and set the command type to adCmd Table and Table name to Titles. Now you are ready to use the database file.
Now, you need to write code for all the command buttons. After which, you can make the ADO control invisible.
For the Save button, the program codes are as follow:
Private Sub cmdSave_Click()
adoBooks.Recordset.Fields("Title") = txtTitle.Text
adoBooks.Recordset.Fields("Year Published") = txtPub.Text
adoBooks.Recordset.Fields("ISBN") = txtISBN.Text
adoBooks.Recordset.Fields("PubID") = txtPubID.Text
adoBooks.Recordset.Fields("Subject") = txtSubject.Text
adoBooks.Recordset.Update
End Sub
For the Add button, the program codes are as follow:
Private Sub cmdAdd_Click()
adoBooks.Recordset.AddNew
End Sub
For the Delete button, the program codes are as follow:
Private Sub cmdDelete_Click()
Confirm = MsgBox("Are you sure you want to delete this record?", vbYesNo, "Deletion Confirmation")
If Confirm = vbYes Then
adoBooks.Recordset.Delete
MsgBox "Record Deleted!", , "Message"
Else
MsgBox "Record Not Deleted!", , "Message"
End If
End Sub
For the Cancel button, the program codes are as follow:
Private Sub cmdCancel_Click()
txtTitle.Text = ""
txtPub.Text = ""
txtPubID.Text = ""
txtISBN.Text = ""
txtSubject.Text = ""
End Sub
For the Previous (<) button, the program codes are
Private Sub cmdPrev_Click()
If Not adoBooks.Recordset.BOF Then
adoBooks.Recordset.MovePrevious
If adoBooks.Recordset.BOF Then
adoBooks.Recordset.MoveNext
End If
End If
End Sub
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