Adds data validation to the specified range.
Syntax
expression.Add(Type, AlertStyle, Operator, Formula1, Formula2)
expression Required. An expression that returns a Validation object.
Type Required Long. The validation type. Can be one of the following XlDVType constants: xlValidateCustom, xlValidateDate, xlValidateDecimal, xlValidateInputOnly, xlValidateList, xlValidateTextLength, xlValidateTime, or xlValidateWholeNumber.
AlertStyle Optional Variant. The validation alert style. Can be one of the following XlDVAlertStyle constants: xlValidAlertInformation, xlValidAlertStop, or xlValidAlertWarning.
Operator Optional Variant. The data validation operator. Can be one of the following XlFormatConditionOperator constants: xlBetween, xlEqual, xlGreater, xlGreaterEqual, xlLess, xlLessEqual, xlNotBetween, or xlNotEqual.
Formula1 Optional Variant. The first part of the data validation equation.
Formula2 Optional Variant. The second part of the data validation when Operator is xlBetween or xlNotBetween (otherwise, this argument is ignored).
Remarks
The Add method requires different arguments, depending on the validation type, as shown in the following table.
| Validation type | Arguments |
|---|---|
| xlValidateCustom | Formula1 is required, Formula2 is ignored. Formula1 must contain an expression that evaluates to True when data entry is valid and False when data entry is invalid. |
| xlInputOnly | AlertStyle, Formula1, or Formula2 are used. |
| xlValidateList | Formula1 is required, Formula2 is ignored. Formula1 must contain either a comma-delimited list of values or a worksheet reference to this list. |
| xlValidateWholeNumber, xlValidateDate, xlValidateDecimal, xlValidateTextLength, or xlValidateTime | One of either Formula1 or Formula2 must be specified, or both may be specified. |