public QrCodeSampleApp() { InitializeComponent(); //双缓存 base.SetStyle(ControlStyles.OptimizedDoubleBuffer | ControlStyles.AllPaintingInWmPaint | ControlStyles.UserPaint, true); base.SetStyle(ControlStyles.ResizeRedraw | ControlStyles.Selectable, true); IniHelper _iniHelper = new IniHelper(); _iniHelper.ls_iniFileFullPath = Application.StartupPath + "\\" + "USER.yc"; string _key = _iniHelper.Read("USER", "key"); _QrEncode = new QrEncode(_key); }