CDaoRecordset::CancelUpdate
The CancelUpdate member function cancels any pending updates due to an Edit or AddNew operation.
virtual void CancelUpdate( );
Заметки
For example, if an application calls the Edit or AddNew member function and has not called Update, CancelUpdate cancels any changes made after Edit or AddNew was called.
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If records are double-buffered (that is, automatic field checking is enabled), calling CancelUpdate will restore the member variables to the values they had before AddNew or Edit was called. |
If there is no Edit or AddNew operation pending, CancelUpdate causes MFC to throw an exception. Call the GetEditMode member function to determine if there is a pending operation that can be canceled.
For related information, see the topic "CancelUpdate Method" in DAO Help.
Требования
Header: afxdao.h