unit Unit3;

interface

uses
  Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,
  StdCtrls, Grids, DBGrids, DBCtrls, Db, DBTables, ExtCtrls, Buttons;

type
  TForm3 = class(TForm)
    Panel1: TPanel;
    Label1: TLabel;
    Button1: TButton;
    Table1: TTable;
    DataSource1: TDataSource;
    DBNavigator1: TDBNavigator;
    DBGrid1: TDBGrid;
    ComboBox1: TComboBox;
    BitBtn1: TBitBtn;
    procedure Button1Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form3: TForm3;

implementation

{$R *.DFM}

procedure TForm3.Button1Click(Sender: TObject);
begin
table1.active:=false;
table1.tablename:=combobox1.Text;
table1.active:=true;
end;
end.