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3、 Add方法
Add方法的目的是向數(shù)據(jù)庫中添加一條新的CD信息，因此它打開的記錄集要求能夠更新。這就不能像OpenDB中那樣僅用Open打開數(shù)據(jù)集。詳細的代碼見下面：
Private Sub Add(Id As String, Name As String, Author As String, Price As Currency, Information As String)
Dim NewConn As New ADODB.Connection
Dim NewRecordsetCD As New ADODB.Recordset
NewConn.Open "Provider=SQLOLEDB;DataSource=MUSE;Initial Catalog=Music;UserId=Wayne;Password=AbCdEfG"
NewRecordsetCD.Open "SELECT * FROM CD", NewConn, adOpenDynamic, adLockOptimistic
NewRecordsetCD.AddNew
NewRecordsetCD.Fields("CD_ID") = Id
NewRecordsetCD.Fields("CD_Name") = Name
NewRecordsetCD.Fields("CD_Author") = Author
NewRecordsetCD.Fields("CD_Price") = Price
NewRecordsetCD.Fields("CD_Information") = Information
NewRecordsetCD.Update
End Sub
解釋：使用 NewRecordsetCD.AddNew,
NewRecordsetCD.Fields(“Some_Key”)=Some_Value
NewRecordsetCD.Update 來添加一條紀錄
4、 Delete方法：
這個方法的目的是為了刪除庫中的某條CD名和相關(guān)的信息。它的實現(xiàn)方法是通過查詢表中唯一的CD_ID來定位CD信息，從而刪除該行紀錄
Private Sub Delete(Id As String)
Dim NewConn As New ADODB.Connection
Dim RecordsetDelete As New ADODB.Recordset
NewConn.Open "Provider=SQLOLEDB;DataSource=MUSE;Initial Catalog=Music;UserId=Wayne;Password=AbCdEfG"
’從表中刪除一條信息
NewConn.Execute "DELETE FROM CD WHERE CD_ID ='" & Id & "'", adCmdText + adExecuteNoRecords
End Sub
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