WPF自动序号（观察者模式）

窗体2中输入选项 窗体1 自动加上

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----

    ..A..H.     35840  2019-12-05 14:51  observablecollectiontest\ObservableCollectionTest\.vs\ObservableCollectionTest\v15\.suo

     文件          0  2019-12-05 14:50  observablecollectiontest\ObservableCollectionTest\.vs\ObservableCollectionTest\v15\Server\sqlite3\db.lock

     文件       4096  2019-12-05 14:50  observablecollectiontest\ObservableCollectionTest\.vs\ObservableCollectionTest\v15\Server\sqlite3\storage.ide

     文件      32768  2019-12-05 14:50  observablecollectiontest\ObservableCollectionTest\.vs\ObservableCollectionTest\v15\Server\sqlite3\storage.ide-shm

     文件     795192  2019-12-05 14:50  observablecollectiontest\ObservableCollectionTest\.vs\ObservableCollectionTest\v15\Server\sqlite3\storage.ide-wal

     文件        908  2008-09-04 02:40  observablecollectiontest\ObservableCollectionTest\Backup\ObservableCollectionTest.sln

     文件        276  2008-09-04 22:47  observablecollectiontest\ObservableCollectionTest\Backup\WPFApp\Application.xaml

     文件        495  2008-09-04 22:47  observablecollectiontest\ObservableCollectionTest\Backup\WPFApp\Application.xaml.vb

     文件       1074  2008-09-04 04:58  observablecollectiontest\ObservableCollectionTest\Backup\WPFApp\Customer.vb

     文件        763  2008-09-04 22:24  observablecollectiontest\ObservableCollectionTest\Backup\WPFApp\CustomerList.vb

     文件       1791  2008-09-04 08:53  observablecollectiontest\ObservableCollectionTest\Backup\WPFApp\MainWindow.xaml

     文件       8049  2008-09-05 00:21  observablecollectiontest\ObservableCollectionTest\Backup\WPFApp\MainWindow.xaml.vb

     文件       1235  2008-09-03 07:24  observablecollectiontest\ObservableCollectionTest\Backup\WPFApp\My Project\app.manifest

     文件       2339  2008-09-02 23:39  observablecollectiontest\ObservableCollectionTest\Backup\WPFApp\My Project\AssemblyInfo.vb

     文件       7064  2008-09-02 23:39  observablecollectiontest\ObservableCollectionTest\Backup\WPFApp\My Project\MyExtensions\MyWpfExtension.vb

     文件       2761  2008-09-02 23:39  observablecollectiontest\ObservableCollectionTest\Backup\WPFApp\My Project\Resources.Designer.vb

     文件       5612  2008-09-02 23:39  observablecollectiontest\ObservableCollectionTest\Backup\WPFApp\My Project\Resources.resx

     文件       2974  2008-09-02 23:39  observablecollectiontest\ObservableCollectionTest\Backup\WPFApp\My Project\Settings.Designer.vb

     文件        201  2008-09-02 23:39  observablecollectiontest\ObservableCollectionTest\Backup\WPFApp\My Project\Settings.settings

     文件       5880  2008-09-04 08:09  observablecollectiontest\ObservableCollectionTest\Backup\WPFApp\WPFApp.vbproj

     文件       1116  2019-12-05 14:50  observablecollectiontest\ObservableCollectionTest\ObservableCollectionTest.sln

    ..A..H.     41984  2008-09-05 00:29  observablecollectiontest\ObservableCollectionTest\ObservableCollectionTest.suo

     文件      43620  2019-12-05 14:50  observablecollectiontest\ObservableCollectionTest\UpgradeLog.htm

     文件        276  2008-09-04 22:47  observablecollectiontest\ObservableCollectionTest\WPFApp\Application.xaml

     文件        495  2008-09-04 22:47  observablecollectiontest\ObservableCollectionTest\WPFApp\Application.xaml.vb

     文件      22528  2019-12-05 14:50  observablecollectiontest\ObservableCollectionTest\WPFApp\bin\Debug\WPFApp.exe

     文件      48640  2019-12-05 14:50  observablecollectiontest\ObservableCollectionTest\WPFApp\bin\Debug\WPFApp.pdb

     文件      14328  2008-09-05 00:05  observablecollectiontest\ObservableCollectionTest\WPFApp\bin\Debug\WPFApp.vshost.exe

     文件       1235  2008-09-03 07:24  observablecollectiontest\ObservableCollectionTest\WPFApp\bin\Debug\WPFApp.vshost.exe.manifest

     文件       2183  2019-12-05 14:50  observablecollectiontest\ObservableCollectionTest\WPFApp\bin\Debug\WPFApp.xml

............此处省略53个文件信息