Search DB control

how do i search through the controls in the form and access the property of the component TQuery,TDataSource and TTable, the following code is just apply to Component that is under TControl but how about Database component like TQuery,TDataSource and so on. ?

for i := 0 to form1.controlcount -1 do
  if controls[i] is TEdit then
      dosomething
 
dumperAsked:
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intheConnect With a Mentor Commented:
If I understand correctly use ComponentCount Instead

procedure TForm1.Button1Click(Sender: TObject);
Var I : Integer;
begin
for i:=0 to Form1.ComponentCount -1 do
if components[i] is tdatasource then
Datasource1.enabled:=false;
end;

Regards Barry
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