Hi, i'm having troubles using the ReportViewer to export to a pdf. Parameters are set by the user and (depending on the report) programmatically.
When i try to export in my code, i get a "Missing Parameter Values" error.
However, if i try to open a report with no parameters - the export works fine.

Can someone please help me out? Why is it not 'remembering' the parameters when it exports?

Here's my code:

this is the Export code: It's called when the user clicks a button

<code>
private void Export4()
{
     string ExportPath;
     ExportPath = Request.PhysicalApplicationPath + "Exported\\";

     if (Directory.Exists(ExportPath) == false)
           Directory.CreateDirectory(Request.PhysicalApplicat ionPath + "Exported\\");

          crDiskFileDestinationOptions = new DiskFileDestinationOptions();
          crExportOptions = reportDocument1.ExportOptions;
          crDiskFileDestinationOptions.DiskFileName =ExportPath + "PortableDoc.pdf";
          crExportOptions.DestinationOptions = crDiskFileDestinationOptions;
          crExportOptions.ExportDestinationType = ExportDestinationType.DiskFile;
          crExportOptions.ExportFormatType = ExportFormatType.PortableDocFormat;

                     try
        {
         reportDocument1.Export();
         }
         catch (Exception err)
         {
                  Response.Write("<BR>");
                  Response.Write(err.Message.ToString());
          }
}
</code>


And this is the code that sets the parameters, report and Viewer: This code is called in the Page_init

<code>


public void LoadReport_Param(ref CrystalReportViewer crViewer, ref ReportDocument crReport)
{
TableLogOnInfo crTableLogOnInfo = new TableLogOnInfo();
ConnectionInfo crConnInfo = new ConnectionInfo();
CrystalDecisions.CrystalReports.Engine.Database crDatabase;
CrystalDecisions.CrystalReports.Engine.Tables crTables;
ParameterDiscreteValue crPDValue;
ParameterFieldDefinitions crPFDefs;
ParameterFieldDefinition crPFDef;
ParameterValues crPValues;
try
     {
    crConnInfo.ServerName = _servername;
    crConnInfo.DatabaseName = _dbname;
    crConnInfo.UserID = _username;
    crConnInfo.Password = _password;
    crDatabase = crReport.Database;
    crTables = crDatabase.Tables;

              foreach(CrystalDecisions.CrystalReports.Engine.Tab le crTable in crTables)
            {
    crTableLogOnInfo = crTable.LogOnInfo;
    crTableLogOnInfo.ConnectionInfo = crConnInfo;
    crTable.ApplyLogOnInfo(crTableLogOnInfo);
             }
    crPFDefs = crReport.DataDefinition.ParameterFields;
            for (int intParamCounter = 0; intParamCounter <= crPFDefs.Count-1; intParamCounter++)
            {
    try
    {
    crPFDef = crPFDefs[intParamCounter];
    crPValues = crPFDef.CurrentValues;
    if ((_GroupABBR != "") || (crPFDef.ParameterFieldName == "Branch") ||
(crPFDef.ParameterFieldName == "@Branch")|| (crPFDef.ParameterFieldName == "?Branch") || (crPFDef.ParameterFieldName.ToLower() == "branch"))
    {
    crPDValue = null;
    crPDValue = new ParameterDiscreteValue();
    crPDValue.Value = _GroupABBR;
    crPValues.Add(crPDValue); crPFDef.ApplyCurrentValues(crPValues);
    }
              }

    catch (EngineException engEx)
    {
          throw new Exception(engEx.Message);
    }
             }
    crViewer.ReportSource= crReport;
    }
    catch (LogOnException engEx)
    {
                     throw new Exception("Incorrect Logon Parameters. Check your user name and password.");
    }
    catch (DataSourceException engEx)
    { throw new Exception("An error has occurred while connecting to the database.");
    }
    catch (EngineException engEx)
    {
         throw new Exception(engEx.Message);
    }
            }
</code>