Workbook.EncryptedFileIntegrityCheckFailed Event

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

You need a 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.v24.1.dll

NuGet Package: DevExpress.Document.Processor

Declaration

C#

public event EncryptedFileIntegrityCheckFailedEventHandler EncryptedFileIntegrityCheckFailed

VB.NET

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.

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.

Implements

EncryptedFileIntegrityCheckFailed