.NET Framework 4.5.2+
.NET Framework 4.5.2+
.NET Standard 2.0+

Workbook.EncryptedFileIntegrityCheckFailed Event

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

You need an active license for the DevExpress Office File API Subscription or DevExpress Universal Subscription to use this event in production code.

Namespace: DevExpress.Spreadsheet

Assembly: DevExpress.Docs.v21.1.dll


public event EncryptedFileIntegrityCheckFailedEventHandler EncryptedFileIntegrityCheckFailed

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.


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.


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