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delphi memo¼ÈëÎÊÌâ

ÎÒÏëÒ»¸ö memo Á½¸öbutton  Ò»¸öedit
memoÖе¼ÈëÎı¾ È»ºóµã»÷Ò»´Î button  edit1.txt ×Ô¶¯Ìí¼ÓÒ»ÐÐmemo
Ôٴεã»÷ Ìí¼ÓmemoÏÂÒ»ÐÐÎı¾ ÈçºÎʵÏÖ
ÎҵĴúÂëÊÇ
==
procedure TForm1.Button2Click(Sender: TObject);
begin
if opendialog1.Execute  then
memo1.Lines.LoadfromFile(opendialog1.FileName);
end;

procedure TForm1.Button1Click(Sender: TObject);
var i,j:integer ;
k:string ;
begin
label1.Caption:='0';
k:=label1.Caption;
i:=0;
j:=memo1.Lines.Count ;
if i <>j then
edit1.Text:= memo1.Lines[i] ;
i:=i+1 ;
i:=strtoint(k);
label1.Caption:= k ;
=====

Ã²ËÆ¹¦ÄÜʵÏÖ²»ÁË ÇëÐÞÕýÏÂ
¶¨ÒåÒ»¸öÈ«¾Ö±äÁ¿l;
procedure TForm1.FormShow(Sender: TObject);//³õʼ»¯±äÁ¿lֵΪ0
begin
  l:=0;
end;

procedure TForm1.Button1Click(Sender: TObject);
begin
  edit1.Text:=memo1.Lines.Strings[l];
  inc(l);
end;

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procedure TForm1.Button2Click(Sender: TObject);
begin
if opendialog1.Execute  then
begin
memo1.Lines.LoadfromFile(opendialog1.FileName);
l:=0;
end;
end

procedure TForm1.Button1Click(Sender: TObject);
begin
  edit1.Text:=memo1.Lines.Strings[l];
  inc(l);


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