DefinedSize Property
Indicates the data capacity of a Field object.
Return Value
Returns a Long value that reflects the defined size of a field as a number of bytes.
Remarks
Use the DefinedSize property to determine the data capacity of a Field object.
The DefinedSize and ActualSize properties are different. For example, consider a Field object with a declared type of adVarChar and a DefinedSize property value of 50, containing a single character. The ActualSize property value it returns is the length in bytes of the single character.