Use data validation rules to control the type of data or the values that users enter into a cell. One example of validation is a drop-down list (also called a drop-down box or drop-down menu). …

You can use data validation to restrict the type of data or values that users enter into cells. This is an advanced topic on data validation. For an introduction to data validation, and how to …

The following example shows how to create a data validation condition to ensure that data typed into a text box control matches a specific value — in this case, the word Hello.

You can insert a drop-down list of valid entries (also called a drop-down menu or drop-down box) in Excel to make data entry easier, or to limit entries to certain items that you define.

You can find cells in a workbook that contain data validation by using the Go To Special dialog box. On the Edit menu, point to Find, and then click Go To. Click Special. Select Data …

If you set up your list source as an Excel table, then all you need to do is add or remove items from the list, and Excel will automatically update any associated drop-downs for you.

You may want to use the data validation tools to check your worksheets for incorrect data that may cause inaccurate calculations or results. Cells that contain invalid data appear with a red …

You can display the XML Map Properties dialog box (Click Map Properties in the XML group on the Developer tab.) and then use the Validate data against schema for import and export …

To remove a drop-down list, click the cell with the list, then click Data > Data Validation, and then on the Settings tab, click Clear All, then OK. A drop-down list is also known as a drop-down …

Returns a Boolean value indicating whether an expression can be converted to a date. Syntax IsDate ( expression ) The required expression argument is a Variant containing a date …