(Delphi ActiveX) Transition from Cert.GetValidToDt to Cert.ValidToStr

Provides instructions for replacing deprecated GetValidToDt method calls with ValidToStr.

Note: This example requires Chilkat v11.0.0 or greater.

Chilkat for Delphi Downloads Chilkat ActiveX DLL for Delphi Chilkat non-ActiveX DLL for Delphi * The examples here use the ActiveX DLL.

uses
    Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
    Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, Chilkat_TLB;

...

procedure TForm1.Button1Click(Sender: TObject);
var
cert: TChilkatCert;
ckdt1: ICkDateTime;
ckdt2: TCkDateTime;

begin
cert := TChilkatCert.Create(Self);

// ------------------------------------------------------------------------
// The GetValidToDt method is deprecated:

ckdt1 := cert.GetValidToDt();
if (cert.LastMethodSuccess = 0) then
  begin
    Memo1.Lines.Add(cert.LastErrorText);
    Exit;
  end;

// ...
// ...

// ------------------------------------------------------------------------
// Do the equivalent using the ValidToStr property

ckdt2 := TCkDateTime.Create(Self);
ckdt2.SetFromRfc822(cert.ValidToStr);
end;