delphi - TCheckBox to filter dataset by a field -

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i'm trying filter dataset 1 field when ticking checkbox, following code have put , thought correct doesn't appear working, brings 0 records.

procedure tfrmcustomers.cbclick(sender: tobject); if cbactive.checked = true dmod.cds begin   disablecontrols;   try     filtered := false;     filteroptions := [focaseinsensitive,fonopartialcompare];     filter := ('active true');     filtered := true;       enablecontrols;   end; end; end;

the name of field in dataset called 'active' , stores string of either 'true' or 'false'.

any appreciated.

thanks,

if field 'active' holds string should write:

filter := ('active = ''true''');

right filtering on boolean value true. also, why don't use boolean / bit field active field?


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