Sets a value that specifies whether users must enter a value in the selected field or text box.
If you want to force the user to make an entry in this field before saving the record to the database, then use the.
You can use this property with theto ensure that an entry is made in this field. This setting is evaluated for controls and fields during validation.
You can set the NotBlank property to Yes on primary fields in a table. Do not set the NotBlank property to Yes on other fields in a table.