JVCL Help:TJvCsvDataSet.CsvKeyDef
JVCL Help: TJvCsvDataSet.CsvKeyDef Property
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Primary Key Definition.
Pascal
propertyCsvKeyDef: string;
Description
Blank means no primary key. The main reason for setting a primary key is so you can enforce primary key uniqueness. You might also want to easily sort the file in primary key order. Primary Key fields MUST Be the first fields logically (and usually, physically) in the CSV file. That is to say, the CsvKeyDef cannot be set to 'A,C' if the first line of the csv file is is 'A,B,C'. If you want fields 'A,C' to be the key, the CSV file fields themselves MUST be ordered 'A,C, .... ' logically.
See Also
TJvCustomCsvDataSet.CsvUniqueKeys, TJvCustomCsvDataSet.CaseInsensitive, TJvCustomCsvDataSet.FindByCsvKey, TJvCustomCsvDataSet.IsKeyUnique
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