SpreadsheetControl.EncryptedFileIntegrityCheckFailed Event

Occurs when the encrypted file did not pass the data integrity verification.

Namespace: DevExpress.Xpf.Spreadsheet

Assembly: DevExpress.Xpf.Spreadsheet.v20.1.dll

Declaration

public event EncryptedFileIntegrityCheckFailedEventHandler EncryptedFileIntegrityCheckFailed
Public Event EncryptedFileIntegrityCheckFailed As EncryptedFileIntegrityCheckFailedEventHandler

Event Data

The EncryptedFileIntegrityCheckFailed event's data class is EncryptedFileIntegrityCheckFailedEventArgs. The following properties provide information specific to this event:

Property Description
Cancel Gets or sets a value indicating whether the event should be canceled. Inherited from CancelEventArgs.

Remarks

SpreadsheetControl uses the Hash-based message authentication code (HMAC) to verify the document data integrity. If the document did not pass the code verification, the EncryptedFileIntegrityCheckFailed event is raised and the following message window is shown.

IntegrityCheckFailed_ErrorMessage

To disable loading the corrupted document, set the Cancel property to false.

NOTE

The HMAC is calculated only for certain encryption types. When you save a password encrypted workbook, set the EncryptionOptions.Type to the EncryptionType.Strong to calculate HMAC.

See Also