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  [Collapse]DevExpress.XtraSpreadsheet
   [Expand]CustomDrawCellBackgroundEventArgs Class
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   [Collapse]SpreadsheetControl Class
     SpreadsheetControl Members
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    [Expand]SpreadsheetControl Methods
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   [Expand]WorksheetDisplayArea Class
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 End-User Documentation

SpreadsheetControl.EncryptedFileIntegrityCheckFailed Event

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

Namespace:DevExpress.XtraSpreadsheet
Assembly:DevExpress.XtraSpreadsheet.v17.2.dll

Expanded Syntax

Expanded Event Data

The event handler receives an argument of type EncryptedFileIntegrityCheckFailedEventArgs containing data related to this event.

Expanded 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.

Note

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

Expanded Example

Show Me

A complete sample project is available in the DevExpress Code Examples database at http://www.devexpress.com/example=T464814.

This code snippet handles the EncryptedFileIntegrityCheckFailed event to perform certain actions when loading a corrupted password encrypted file.

Expanded See Also

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