3、 Add方法

　　Add方法的目的是向數(shù)據(jù)庫(kù)中添加一條新的CD信息，因此它打開(kāi)的記錄集要求能夠更新。這就不能像OpenDB中那樣僅用Open打開(kāi)數(shù)據(jù)集。詳細(xì)的代碼見(jiàn)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?zhuān)菏褂?NewRecordsetCD.AddNew,

NewRecordsetCD.Fields(“Some_Key”)=Some_Value

NewRecordsetCD.Update 來(lái)添加一條紀(jì)錄

4、 Delete方法：

　　這個(gè)方法的目的是為了刪除庫(kù)中的某條CD名和相關(guān)的信息。它的實(shí)現(xiàn)方法是通過(guò)查詢(xún)表中唯一的CD_ID來(lái)定位CD信息，從而刪除該行紀(jì)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