Screen-Cast: Exploring Date Data-Validation in Open XML SpreadsheetML

Data validation is a feature of Open XML that enables you to specify validation criteria for a range of cells.  You can specify the allowable values for cells, you can specify a message that the user sees when they navigate to those cells, you can specify the error message that the user sees when they enter invalid data, and you can specify the behavior of Excel when the user enters invalid data.

This screen-cast looks at these aspects of data validation, and explores the Open XML SpreadsheetML markup that corresponds to data validation.