A Field object on a Recordset also features the ValidateOnSet property. When the ValidateOnSet property is set to True , Access checks validation as soon as the field's DAO Value property is set. When it is set to False (the default), Access checks validation only when the completed record is updated. For example, if you are adding data to a record that contains a large Memo or OLE Object field and that has the DAO ValidationRule property set, you should determine whether the new data violates the validation rule before trying to write the data. To do so, set the ValidateOnSet property to True . If you wait to check validation until the entire record is written to disk, you may waste time trying to write an invalid record to disk.
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