private void RunReport()
{
var saleCountModel = new SaleCountModel
{
departmentID = Departments.ElementAt(SelectedDepartmentIndex).Key,
ShiftNumber = Shifts.ElementAt(SelectedShiftIndex).Key,
TillNumber = Tills.ElementAt(SelectedTillIndex).Key
};
MessengerInstance.Send <SaleCountModel>(saleCountModel, "RunReport");
}