数字键盘控件，实现数字输入，以及切换到软键盘控件（刚才上传的Keyboard_20100726.rar）-number pad control

远程连接sql数据库 实现数据的上传下载 并用listview控件显示 并可对其进行添加 删除 修改 等操作-Remote connection sql database to download and upload data with the listview control to display and modify them to add delete and other operations