This example creates and registers a descendant of our WebDocumentViewerOperationLogger class to attach the XlSheetCreated event handler to the document.

This example also illustrates the technique used to restore event handlers after a document is serialized in the cache and all event handlers are detached.

Run the application and select Export to XLSX:

The product category is used to rename worksheets in the exported XLSX file. The category is displayed in the report on the page from which the worksheet originated.

• CustomWebDocumentViewerOperationLogger.cs

• Web Document Viewer Cache Management