private async void ShowAccountMethod()
 {
     DateFrom       = _saleServ.GetFirstDate(_selectedSalesperson.ID);
     DateTo         = _saleServ.GetLastDate(_selectedSalesperson.ID);
     TotalBillPrice = _saleServ.GetTotalBillPrice(_selectedSalesperson.ID, _dateFrom, _dateTo);
     GetSalespersonAccountsMethod();
     _salespersonAccountShowDialog.DataContext = this;
     await _currentWindow.ShowMetroDialogAsync(_salespersonAccountShowDialog);
 }