private bool checkPermission()
{
if (!logined)
{
Codes.RollCallDataContext dc = Codes.DataOperation.getDataContext();
if (dc.Settings.Where(t => t.Tag == "RollCall").Count() == 0)
{
// 进行必要的应用程序设置
MessageBox.Show("信息尚未初始化，接下来请完应用程序配置任务！", "点名系统", MessageBoxButton.OK, MessageBoxImage.Information);
Windows.SettingsWindow sw = new Windows.SettingsWindow();
sw.ShowDialog();
return(false);
}
else
{
// ?? 为结合运算符，当可空类型为空时，logined=false
logined = new LoginWindow().ShowDialog() ?? false;
}
}
return(logined);
}
private static void OpenSettingsWindow()
{
var settingsWindow = new Windows.SettingsWindow();
settingsWindow.ShowDialog();
}