How do I make this code more readable?

Question

I wrote this today and I'm ashamed. What do I need to do to make this chaotic stuff more accurate and readable amongst others?

switch ((RequestReportsCalculatingStoredProcedures.RequestReportStoredProcedureType)Enum.Parse(typeof(RequestReportsCalculatingStoredProcedures.RequestReportStoredProcedureType), ihdType.Value))
    {
            //REF:This can (but should it?) be refactored through strategy pattern
        case RequestReportsCalculatingStoredProcedures.RequestReportStoredProcedureType.ReportPlanWithEffects:
            grvEconomicCriteria.DataSource = RequestReportsCalculatingStoredProcedures.ReportsDataParser(
                            RequestReportsCalculatingStoredProcedures.ReportPlanWithEffects(requestNo, RequestReportsCalculatingStoredProcedures.GetAlgorithmNoByRequestNo(requestNo)));
            break;
        case RequestReportsCalculatingStoredProcedures.RequestReportStoredProcedureType.ReportPlanWithEffectsForFacts:
            DateTime factDate;
            try
            {
                factDate = Convert.ToDateTime(ihdDate.Value);
            }
            catch(FormatException)
            {
                grvEconomicCriteria.DataSource = RequestReportsCalculatingStoredProcedures.ReportsDataParser(
                            RequestReportsCalculatingStoredProcedures.ReportPlanWithEffectsForFacts(requestNo, RequestReportsCalculatingStoredProcedures.GetAlgorithmNoByRequestNo(requestNo), DateTime.MinValue));
                break;
            }
            grvEconomicCriteria.DataSource = RequestReportsCalculatingStoredProcedures.ReportsDataParser(
                            RequestReportsCalculatingStoredProcedures.ReportPlanWithEffectsForFacts(requestNo, RequestReportsCalculatingStoredProcedures.GetAlgorithmNoByRequestNo(requestNo), factDate));
            break;
        default:
            break;
    }

Answer 1

You can always use an alias for the very long type RequestReportsCalculatingStoredProcedures:

using RRCSP = RequestReportsCalculatingStoredProcedures;

Note: You will need to use the fully qualified name (including namespace) in the using directive.

Answer 2

On top of what the others have said about shortening the names etc, you should think about extracting the code from the case statement into function calls, so you end up with something like

switch (myMassiveVariable)
{
    case RequestReportStoredProcedureType.ReportPlanWithEffects:
        RunReportWithEffects(requestNo);
        break;
    case RequestReportStoredProcedureType.ReportPlanWithEffectsForFacts:
        RunReportWithFacts(requestNo);
        break;
}

That helps to tidy things up a bit.