validateline_a_virtual_to_implement_a_filter_.htm
Navigation: ABC Library Reference > ASCIIFileClass > AsciiFileClass Methods >====== ValidateLine (a virtual to implement a filter)  ====== |    |
ValidateLine( line ), PROTECTED, VIRTUAL
| ValidateLine | A virtual placeholder method to implement a filter. |
| line | The offset or position of the line of text to evaluate. |
The ValidateLine method is a virtual placeholder method to implement a filter. ValidateLine returns one (1) to include the line and zero (0) to exclude the line.
Implementation:
The ValidateLine method is a placeholder method for derived classes. The ASCIIFileClass calls the ValidateLine method when it initially reads a record.
Return Data Type: BYTE
Example:
MyFileClass.ValidateLine FUNCTION(STRING LineToTest)
CODE
IF LineToTest[1] = '!' !check for ! in column 1
RETURN False !exclude lines with !
ELSE
RETURN True !include all other lines
END
validateline_a_virtual_to_implement_a_filter_.htm.txt · Last modified: 2021/04/15 15:57 by 127.0.0.1