unit Unit4;

interface

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

type
  TForm4 = class(TForm)
    Label1: TLabel;
    ComboBox1: TComboBox;
    Button1: TButton;
    DBGrid1: TDBGrid;
    DBNavigator1: TDBNavigator;
    Table1: TTable;
    DataSource1: TDataSource;
    BitBtn1: TBitBtn;
    procedure Button1Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form4: TForm4;

implementation

{$R *.dfm}

procedure TForm4.Button1Click(Sender: TObject);
begin
table1.active:=false;
table1.tablename:=combobox1.text;
table1.Active:=true;
end;

end.