private void btnAmazonOrders_Click(object sender, EventArgs e) { AmazonServiceClient mwsOrders = new AmazonServiceClient(); DateTime FromDate = DateTime.Now.AddDays(-3).Date; DateTime ToDate = DateTime.Now.AddMinutes(-10).Date; AmazonOrderOptions orderOptions = new AmazonOrderOptions(FromDate, ToDate); ExternalOrderResult result = mwsOrders.GetOrders(orderOptions); if (result.Success) { MessageBox.Show("Success"); } }