passing parameter to the CRYSTAL REPORT through C# in asp.net

Question

I am new to crystal report.I have designed the crystal report by following this link Crystal Report with SQL Stored Procedure Parameter and Visual Studio Actually i need to pass different ID(Input value of the SP) to the SP that i connected with the Crystal report.

This is the Code that i am Passing the ID to crystal report :

        protected void Button1_Click(object sender, EventArgs e)
        {
        string QuotationID = ViewState["QUOTATION_ID"].ToString();
        ReportDocument reportDocument = new ReportDocument();
        ParameterField paramField = new ParameterField();
        ParameterFields paramFields = new ParameterFields();
        ParameterDiscreteValue paramDiscreteValue = new ParameterDiscreteValue();



        paramField.Name = "@id";


        paramDiscreteValue.Value = QuotationID;

        paramField.CurrentValues.Add(paramDiscreteValue);
        paramFields.Add(paramField);


        paramFields.Add(paramField);

        CrystalReportViewer1.ParameterFieldInfo = paramFields;

        string reportPath = Server.MapPath("~/CrystalReport.rpt");

        reportDocument.Load(reportPath);


        CrystalReportViewer1.ReportSource = reportDocument;
        }

But when ever i click the button it asking the ID ...

Answer 1

To set parameter on crystal I always do it this way:

ReportDocument reportDocument = new ReportDocument();
reportDocument.Load(reportPath);
reportDocument.SetParameterValue("@id", QuotationID);

if you want to convert your report to a pdf:

var exportOptions = reportDocument.ExportOptions;
exportOptions.ExportDestinationType = ExportDestinationType.NoDestination;
exportOptions.ExportFormatType = ExportFormatType.PortableDocFormat;
var req = new ExportRequestContext {ExportInfo = exportOptions};
var stream = reportDocument.FormatEngine.ExportToStream(req);

this returns you back a filestream that you can open from the aspx page.