The second-generation .NET Framework builds on the tools of the first to provide better, more standards-compliant XML data validation.

Learn how to create a drop-down list using Data Validation in Excel. Data Validation limits the type of data that can be entered into a cell.

Susan Harkins shows you a quick method for removing validation rules for multiple ranges in Excel, at the same time.

As Brien demonstrates, string validation is not the only type of input validation that PowerShell can perform.