unit Unit1;    interface    uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, ExtCtrls, DBCtrls, DB, DBClient, StdCtrls, Mask, Grids, DBGrids;    type
  TForm1 = class(TForm)
    ListBox1: TListBox;
    ClientDataSet1: TClientDataSet;
    DBNavigator1: TDBNavigator;
    Button1: TButton;
    Label1: TLabel;
    DBGrid1: TDBGrid;
    DBText1: TDBText;
    DBEdit1: TDBEdit;
    procedure Button1Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;    var
  Form1: TForm1;    implementation
uses TypInfo;
{$R *.dfm}    procedure TForm1.Button1Click(Sender: TObject);
var
  i:Integer;
  Obj:TObject;
begin
  for i:=0 to Self.ComponentCount-1 do
  begin
    try
      Obj:=GetObjectProp((Components[i] as TObject),'DataSource'); //如果這個元件有DataSource屬性,就會執行下面的程式:加入到ListBox1中,否則就會有錯誤產生
      ListBox1.Items.Add(Components[i].Name);
    except
    end;
  end;
end;    end.

    procedure TForm1.Button1Click(Sender: TObject);
var i:integer;
begin
  listbox1.Clear;
  for i:=0 to self.ComponentCount-1 do begin
    if GetPropInfo(self.components[i].ClassInfo, 'datasource') <> nil then
       listbox1.Items.Add(self.components[i].name);
  end;    end;