what happen it not do anything

[warat mookdaanan]

  if MessageDlg('ยืนยันการสั่งซื้อสินค้า', mtConfirmation, mbYesNo) = mrYes then
  begin
    with UniQuery2 do
    begin
      Close;
      Params.ParamValues['okbuy']:=1;
      Params.ParamValues['okbuydate']:=FormatDateTime('yyyy-mm-dd',date)+' '+FormatDateTime('hh:nn:ss',now());
      Params.ParamValues['orderinv']:=UniQuery1.FieldValues['orderinv'];
      ExecSQL;
    end;
  end;

[Sherzod]

Use "callback", if I understand you correctly. Please see related demo examples.

[warat mookdaanan]

Dialogs Anonymous Callback

Form Anonymous Callback

Form Callback

HTTP Post Callback - Browser Window

HTTP Post Callback - HTMLFrame

HTTP Post Callback - HTMLFrame2

HTTP Post Callback - URLFrame - Auto Target

Prompt Anonymous Callback

 

what callback i must to do

[Sherzod]

51 minutes ago, warat mookdaanan said:

Dialogs Anonymous Callback

http://unigui.com/doc/online_help/synch-and-asynch-operations.htm