The type of data validation applied to cells in a column.

• WholeNumber

  Only whole numbers are allowed. Once the whole number option is selected, other options become available to further limit input.

• Decimal

  Only decimal numbers are allowed. Once the decimal number option is selected, other options become available to further limit input.

• Date

  Only dates are allowed.

• Time

  Only times are allowed.

• TextLength

  Validates input based on number of characters or digits.

• List

  Only values from a predefined list are allowed. The values are presented to the user as a dropdown menu control.