ISpreadsheetComponent.EncryptedFileIntegrityCheckFailed Event

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

Namespace: DevExpress.Spreadsheet

Assembly: DevExpress.Spreadsheet.v24.1.Core.dll

NuGet Package: DevExpress.Spreadsheet.Core

Declaration

C#

event EncryptedFileIntegrityCheckFailedEventHandler EncryptedFileIntegrityCheckFailed

VB.NET

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.

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

Note

The HMAC is calculated only if the workbook’s EncryptionOptions.Type is set to EncryptionType.Strong.