Bit of code for John

code.cs

        protected void CreateReportButton_Click(object sender, EventArgs e)
        {
            DateTime startDate, endDate;
       
            if (FormValid(out startDate, out endDate))
            {
                this.GenerateReport(startDate, endDate);
            }
        }

        private bool FormValid(out DateTime startDate, out DateTime endDate)
        {
            //validate the dates and also check that the start is before the end etc...
            bool valid = false;

            valid = DateTime.TryParse(this.frm_DateStart.Text, out startDate);
            valid = DateTime.TryParse(this.frm_DateEnd.Text, out endDate);
            valid = startDate <= endDate;

            if (!valid)
            {
                this.feedback1.add(@"
                    Please ensure you have entered a valid Start and 
                    End date and that the Start date is before the End date
                ");
            }

            return valid;
        }


        private void GenerateReport(DateTime startDate, DateTime endDate)
        {
            var outputFileName = DateTime.Now.ToString("yyyyMMddHHmmss") + @"_AdvisorSessionReport" + ".xls";

            var man = ObjectFactory.GetInstance<IReportManagement>();

            // AdvisorSessionReport will be red. That's becuase the method was added to the concrete class 
            // but not it's interface.... oops! we had better add it or we won't be able to 
            // a) test the class in the future
            // b) nicely swap the class out. 

            var bytes = man.AdvisorSessionReport(startDate, endDate);

            Context.StreamBytes(MimeType.Excel, outputFileName, bytes);
        }