unit1.~pas

用QUERY控件与 Table控件的database management.

unit Unit1;

interface

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

type
  TForm1 = class(TForm)
    Query1: TQuery;
    DataSource1: TDataSource;
    DBGrid1: TDBGrid;
    DBNavigator1: TDBNavigator;
    Table1: TTable;
    DataSource2: TDataSource;
    ComboBox1: TComboBox;
    procedure ComboBox1Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

procedure TForm1.ComboBox1Click(Sender: TObject);
begin
if ComboBox1.text='编辑记录' then begin
 DBGrid1.DataSource:=datasource2;
 DBNavigator1.DataSource:=datasource2;
 end;
if ComboBox1.text='查询记录' then begin
 DBGrid1.DataSource:=datasource1;
 DBNavigator1.DataSource:=datasource1;

end;

end.