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delphi_ÊÖ¹¤´´½¨dataset

procedure TForm1.Button3Click(Sender: TObject);
begin
    //ÏÔʾ´´½¨µÄÊý¾Ý¼¯: dbgrid->datasource->clientdataset
    //Èç¹ûÊÖ¹¤¿ØÖÆdbgridÏÔʾ¿í¶È,dbgridÓÒ¼ü´´½¨Á½¸ö×Ö¶Îaa,bb,·Ö±ðÉèÖÿí¶È¼´¿É
    cds1.FieldDefs.Add('aa',ftString,40);
    cds1.FieldDefs.Add('bb',ftInteger);
    cds1.CreateDataSet;
    cds1.Append;cds1.FieldValues['aa']:='a1';cds1.FieldValues['bb']:='10';cds1.Post;
    cds1.Append;cds1.FieldValues['aa']:='a2';cds1.FieldValues['bb']:='20';cds1.Post;
    cds1.Append;cds1.FieldValues['aa']:='a3';cds1.FieldValues['bb']:='30';cds1.Post;
    //cds1.Active:=true;
    //cds1.EmptyDataSet;
end;


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delphi ¶Ô×Ö·û´®½øÐе¹ÐòµÄ×î¿ìËã·¨

var
   L,i:integer;
   Ustr,str:string;
   p:char;
begin
  str:='123456789ABCDEFG'
  L:=length(str);
  for i:=1 to l do begin
      p:=str[i];
      str[i]:=str[l-(i-1)];
     ......

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¹ØÓÚÔÚ³ÌÐòÖÐÉ趨comboboxµÄÏÂÀ­²Ëµ¥¿í¶È[delphi]

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CbName: TComboBox;
width: Integer;                  //ʵ¼ÊËùÐèµÄ¿í¶È
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width := CbName.Canvas.TextWidth(CbName.Items[I]); //¿ÉÓô˷½·¨Í¨¹ý±éÀú»ñµÃijѡÏîµÄ×î´ó¿í¶È£¬Ò²¿ÉÒÔ°´×Ô¼ºµÄÐ ......

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function IncYear(const AValue: TDateTime;
  const ANumberOfYears: Integer = 1): TDateTime;
// function Inc ......

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