Passing ReportParameters back to method

Question

I have an application that is doing all of our reporting with locally stored RDLs. I have two forms, one is a simple viewer that contains a TabPageControl, and the other is an FLP of controls that the user can use to select report parameters. We are planning on having over 30+ options, but at the moment we only have around 5 (certain ones display for certain reports, the rest are hidden).

The issue I'm running into is that I need to have some way to get the options they chose out of a List or Collection. The method I'm using right now is

public void AddReportToViewer(string reportName, List<ReportParameter> parameterList = null)
    {
        TabPage newPage = new TabPage();      
        ReportViewer reportViewer = new ReportViewer();

        newPage.Text = reportName;
        newPage.Controls.Add(reportViewer);

        tbcReports.TabPages.Add(newPage); //adding the report viewer to page, should do this at the end of the method

        reportViewer.Reset();
        reportViewer.ProcessingMode = ProcessingMode.Local;
        reportViewer.LocalReport.ReportPath = "MyPath/reportName";
        ReportDataSource rds = new ReportDataSource();

        //parse parameters to individual objects to use with method calls

        int parameterEmployeeID = 0;
        int parameterStoreID = 0;
        List<int> parameterStoreIDs = null;
        DateTime parameterFromDate = DateTime.Now;
        DateTime parameterToDate = DateTime.Now;

        //Use parameters to get objects, just one here, but we have multiple

        List<EmployeeTimeclockReportObjects> timeclock = reportBL.getEmployeeTimeclock(parameterEmployeeID, parameterStoreID, parameterFromDate, parameterToDate);
        reportBindingSource.DataSource = timeclock;
        rds = new ReportDataSource("TimeclockEntries", reportBindingSource);
        reportViewer.LocalReport.DataSources.Add(rds);

        reportViewer.RefreshReport();
        reportViewer.Dock = DockStyle.Fill;            
    }

This all works, but here's where I need help

        int parameterEmployeeID = 0;
        int parameterStoreID = 0;
        List<int> parameterStoreIDs = null;
        DateTime parameterFromDate = DateTime.Now;
        DateTime parameterToDate = DateTime.Now;

I need to strip the values from the list of report parameters so I can use them in the data population methods. For example, I'm doing something like...

int parameterEmployeeID = Convert.ToInt32(parameterList[parameterList.FindIndex(x => x.Name == "employeeID")].Values[0]);

But then I run into issues on the List<int> parameterStoreIDs, because I can't convert a StringCollection to a List of ints.

Does anyone have any recommendations on either a) converting the StringCollection to a list of ints, or b) anything else I could try doing to get the information back from the second form besides a List<ReportParameters> ???

Answer 1

For question (a), consider something like this:

I am not clear on what variable in the code would be the StringCollection, so for the sake of the example I'm just calling it strings.

List<int> ints = strings.Cast<string>(s => Convert.ToInt32(s)).ToList();