控件数组

var
　　Edits: array [0..5] of TEdit;  // 把所有的Edit当成是数组

procedure TForm1.Button1Click(Sender: TObject);
var
  i, j: integer;

begin
  for i := 0 to ComponentCount - 1 do begin  // 循环控件
    if Components[i] is TEdit then
      Edits[i] := Components[i] as TEdit;
  end;

  (*
  Edits[0] := Edit1;      // 先要赋值才能 才能给Text赋值
  Edits[1] := Edit2;
  Edits[2] := Edit3;
  Edits[3] := Edit4;
  Edits[4] := Edit5;
  Edits[5] := Edit6;
  *)
 // Edits[0].Text := 'aaa';
  j := 0;
  for i := 0 to Length(Edits)-1 do
  begin
    Edits[i].Text := '这是Edit' + IntToStr(j); // 赋值
    Inc(j);
  end;

end;

 总会有方便的时候，每个控件都是数组的成员。