problems with Exporting and Viewer

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?

Here's my code:

this is the Export code:

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

if (Directory.Exists(ExportPath) == false)
Directory.CreateDirectory(Request.PhysicalApplicationPath + "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:

<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.Table 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>Did you ever get a result with this? I am having the same problem. I have watched every single ParameterField in my ParameterFields collection and where there isnt a value, I set one - then as soon as I do ReportDocument.Export I get this "Missing Parameter Values" exception.|||See if you are able to find solution here
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