I load up a CSV file to TCSVDataSet, and set it active.
Then, I go to CSVOptions of TCSVDataSet and set FirstLineAsFieldNames to true.
But then there occurs error --- it is not done.
I think the first column names --- Column1, Column2, ... are not cleared.
In the FieldDefs of TCSVDataSet, column names are changed to first line, but if I right click on the TCSVDataSet icon and enter Edit Fields, the old field names are alive, and I cannot remove them.