public void LoadData() { if (dateTimePickerFrom.Value.Date >= dateTimePickerTo.Value.Date) { MessageBox.Show("Дата начала должна быть меньше даты окончания", "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error); return; } try { ReportParameter parameter = new ReportParameter("ReportParameterPeriod", "c " + dateTimePickerFrom.Value.ToShortDateString() + " по " + dateTimePickerTo.Value.ToShortDateString()); reportViewer.LocalReport.SetParameters(parameter); var requests = logic.GetRequests(new ReportBindingModel { DateFrom = dateTimePickerFrom.Value.Date, DateTo = dateTimePickerTo.Value.Date }); var cars = logic.GetCars(); List <ReportCarsViewModel> dataSourceCars = new List <ReportCarsViewModel>(); foreach (var car in cars) { dataSourceCars.Add(new ReportCarsViewModel { CarName = car.CarName, FullPrice = car.FullPrice, Price = car.Price, Year = car.Year }); } List <ReportRequestsViewModel> dataSourceRequests = new List <ReportRequestsViewModel>(); foreach (var reqs in requests) { foreach (var req in reqs) { dataSourceRequests.Add(new ReportRequestsViewModel { RequestName = req.RequestName, DateCreate = req.DateCreate }); } } ReportDataSource sourceCars = new ReportDataSource("DataSetCars", dataSourceCars); ReportDataSource sourceRequests = new ReportDataSource("DataSetRequests", dataSourceRequests); reportViewer.LocalReport.DataSources.Add(sourceCars); reportViewer.LocalReport.DataSources.Add(sourceRequests); reportViewer.RefreshReport(); } catch (Exception ex) { MessageBox.Show(ex.Message, "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error); } this.reportViewer.RefreshReport(); }