Data validation in Microsoft Excel is a great way to limit what can be entered into a cell. However, creating rules using a formula allows you to enforce even more precise parameters—and there are ...

From simple lists to dynamic spill ranges and cascading menus, Excel drop-downs offer flexible control over data entry.

Follow the steps below to create a drop-down list using data validation in Excel. If you want to add a message pop up, you can click the Input Message tab and check the checkbox for “Show input ...

The second-generation .NET Framework builds on the tools of the first to provide better, more standards-compliant XML data validation. Technology Toolbox: XML, .NET Framework 2.0 Version 1.x of the ...