There are 2 ways to solve ur problem..
1) Method First:
(a)U should change the Property of "Save" Button to enable false at the time of form load event (or set the "Save" Button enable property to False at design time from the property window in VB 6.0)
(b) Then enable the "Save" Button Property only when Textbox properties of all 1 or 2 or all 3 (i.e. Name, Last Name & Address textbox changing event)
By this u can Stop the user & validate that whatever user fill the Text box and u can stop user to click on save button without filling the Textboxes and there will be no empty recorded will be inserted into the Database.
2) Method Second:
(a) U can also change the Property of "Save" Button to enable false at the Run-time. By placing the following code on the form load event.
(Assuming that ur Save Button name is btnSave)
Form Load()
btnSave.enable=False
End Sub
(b) Placed following code on the TextBox(s) changing event
(Assuming that ur Name, Last Name and Address Textboxes names are txtName, txtLName & txtAddress respectively)
Private Sub txtName_Changing(ByVal sender As Object, ByVal e As System.EventArgs)
If Not txtName.Text = "" Then
btnSave.Enabled = True
End If
Private Sub txtLName_Changing(ByVal sender As Object, ByVal e As System.EventArgs)
If Not txtLName.Text = "" Then
btnSave.Enabled = True
End If
Private Sub txtAddress_Changing(ByVal sender As Object, ByVal e As System.EventArgs)
If Not txtAddress.Text = "" Then
btnSave.Enabled = True
End If
Use One of these method to solve ur problem.