Missing parameter values when trying to export to pdf in C#

Question

HI all,</BR>
</BR>
I'm having a problem passing a parameter from my c#.NET code through Crystal Reports 2008...</BR>
</BR>
Crystal Reports Developer version 12.1.0.892</BR>
using a WinXP machine</BR>
The parameter I've setted up in Crystal Reports Design is one to dynamically change the query that will run on the report:</BR>
"SELECT * FROM  REPORTS.{?Protocolname}_FC_QUERY"</BR>
</BR>
</BR>
The code I use calling one of the reports I must provide:</BR>
</BR>
using System;</BR>
using System.Collections.Generic;</BR>
using CrystalDecisions.CrystalReports.Engine;</BR>
using CrystalDecisions.Shared;</BR>
using System.Data;</BR>
using System.Data.OracleClient;</BR>
using System.Collections;</BR>
namespace CrystalReportsRapportjes</BR>
{</BR>
class MainClass</BR>
{</BR>
public static void Main(string[] args)</BR>
{</BR>
Console.WriteLine("Start of program!");</BR>
string connString = "server=CT_PRD;user id=report;password=report";</BR>
OracleConnection conn = new OracleConnection(connString);</BR>
try</BR>
{</BR>
conn.Open();</BR>
Console.WriteLine("Connection opened.");</BR>
</BR>
Console.WriteLine("Connection Properties:");</BR>
Console.WriteLine("\tConnection String: {0}", conn.ConnectionString);</BR>
Console.WriteLine("\tServerVersion: {0}", conn.ServerVersion);</BR>
Console.WriteLine("\tState: {0}", conn.State);</BR>
QL_ExportReport("C:\\Data\\converted2crystal\\PLANNING_REPORT_params.rpt");</BR>
</BR>
} catch (OracleException e) {</BR>
Console.WriteLine("Error: " + e);</BR>
} finally {</BR>
conn.Close();</BR>
Console.WriteLine("Connection closed.");</BR>
}</BR>
Console.WriteLine("End of program!");</BR>
Console.ReadKey();</BR>
}</BR>
private static void QL_ExportReport(string reportName)</BR>
{</BR>
ReportDocument CR_reportDocument = new ReportDocument();</BR>
DataSet ds = new DataSet();</BR>
CR_reportDocument.Load(reportName);</BR>
CR_reportDocument.SetDatabaseLogon("Reports", "Reports");</BR>
for(int i=0;i<CR_reportDocument.DataDefinition.ParameterFields.Count; i++)</BR>
{</BR>
Console.WriteLine("Reading parameters");</BR>
Console.WriteLine(CR_reportDocument.DataDefinition.ParameterFields<i>.ParameterFieldName);</BR>
if(CR_reportDocument.DataDefinition.ParameterFields<i>.ParameterFieldName==
"Protocolname")</BR>
Console.WriteLine("Correct parameter found, now assigning value");</BR>
ParameterValues ThisPV = new ParameterValues();</BR>
ThisPV.AddValue("TMC999C999");</BR>
CR_reportDocument.DataDefinition.ParameterFields<i>.CurrentValues.Clear();</BR>
CR_reportDocument.DataDefinition.ParameterFields<i>.DefaultValues.Clear();</BR>
</BR>
CR_reportDocument.DataDefinition.ParameterFields<i>.ApplyCurrentValues(ThisPV) ;</BR>
//CR_reportDocument.SetParameterValue("Protocolname","TMC999C999");</BR>
//CR_reportDocument.DataDefinition.ParameterFields<i>.CurrentValues.AddValue(ThisPV);</BR>
}</BR>
CR_reportDocument.Refresh();</BR>
CR_reportDocument.ExportToDisk</BR>(ExportFormatType.PortableDocFormat,"C:\\Data\\converted2crystal\\EDC_PLANNING_RPT_params.pdf");</BR>
CR_reportDocument.Close();</BR>
}</BR>
}</BR>
}</BR>
</BR>
The exceptions he throws using this code is = CrystalDecisions.CrystalReports.Engine.ParameterFieldCurrentValueException: </BR>Missing parameter values. ---> System.Runtime.InteropServices.COMException: Missing parameter values.</BR>
at CrystalDecisions.ReportAppServer.ConvertDotNetToErom.ThrowDotNetException</BR>
at CrystalDecisions.ReportSource.EromReportSourceBase.ExportToStream</BR>
at CrystalDecisions.CrystalReports.Engine.FormatEngine.ExportToStream</BR>
at CrystalDecisions.CrystalReports.Engine.FormatEngine.Export</BR>
at CrystalDecisions.CrystalReports.Engine.ReportDocument.ExportToDisk</BR>
at CrystalReportsRapportjes.MainClass.QL_ExportReport in </BR>c:\Data\sharpdevelopfolder\CrystalReportsRapportjes\CrystalReportsRapportjes\Program.cs:line 72</BR>
at CrystalReportsRapportjes.MainClass.Main in </BR>c:\Data\sharpdevelopfolder\CrystalReportsRapportjes\CrystalReportsRapportjes\Program.cs:line 33</BR>
</BR>
When I use the code</BR>
CR_reportDocument.DataDefinition.ParameterFields<i>.CurrentValues.AddValue(ThisPV);</BR>
instead of</BR>
CR_reportDocument.DataDefinition.ParameterFields<i>.ApplyCurrentValues(ThisPV) ;</BR>
</BR>
the error I get there is:</BR>
System.ArgumentException: Value does not fall within the expected range.</BR>
at CrystalDecisions.Shared.SharedUtils.ConvertToDecimal</BR>
at CrystalDecisions.Shared.ParameterDiscreteValue.set_Value</BR>
at CrystalDecisions.Shared.ParameterValues.AddValue</BR>
at CrystalReportsRapportjes.MainClass.QL_ExportReport in </BR>c:\Data\sharpdevelopfolder\CrystalReportsRapportjes\CrystalReportsRapportjes\Program.cs:line 69</BR>
at CrystalReportsRapportjes.MainClass.Main in </BR>c:\Data\sharpdevelopfolder\CrystalReportsRapportjes\CrystalReportsRapportjes\Program.cs:line 33
</BR>
</BR>
</BR>
Can someone please tell me what's the right way passing a parameter to a report?</BR>
</BR>
Thanks in advance.</BR>

Answer 1

You should use the
ReportDocument.SetParameterValue("ParameterName", "ParamValue");
>
Els Cochez wrote:
> When I use the code</BR>
> CR_reportDocument.DataDefinition.ParameterFields<i>.CurrentValues.AddValue(ThisPV);</BR>
> instead of</BR>
> CR_reportDocument.DataDefinition.ParameterFields<i>.ApplyCurrentValues(ThisPV) ;</BR>
> </BR>
> the error I get there is:</BR>
> System.ArgumentException: Value does not fall within the expected range.</BR>
> at CrystalDecisions.Shared.SharedUtils.ConvertToDecimal</BR>
> at CrystalDecisions.Shared.ParameterDiscreteValue.set_Value</BR>
> at CrystalDecisions.Shared.ParameterValues.AddValue</BR>
> at CrystalReportsRapportjes.MainClass.QL_ExportReport in </BR>c:\Data\sharpdevelopfolder\CrystalReportsRapportjes\CrystalReportsRapportjes\Program.cs:line 69</BR>
> at CrystalReportsRapportjes.MainClass.Main in </BR>c:\Data\sharpdevelopfolder\CrystalReportsRapportjes\CrystalReportsRapportjes\Program.cs:line 33</BR>
> </BR>
> </BR>
> Can someone please tell me what's the right way passing a parameter to a report?</BR>
> </BR>
Try parsing the parameter value to a decimal value before setting it as parameter value.
Hope this will help