Working with Stored Procedure within the SharpDevelop Report

Hi everybody,

I am trying to design or develop a report that will be generated by a filter, for instance: by a gender (SELECT * FROM Customer WHERE gender = 'M') and this is using the stored procedure as indicated below:

-------------------------->>>

1. set ANSI_NULLS ON
2. set  QUOTED_INDENTIFIER ON
3. go
4. ALTER PROCEDURE [dbo].[_FilterByGender]
5.               @gen nchar(1)
6. AS
7.   BEGIN
8.       SET NOCOUNT ON;
9.             select firstname, lastname, gender, race from customer where gender = @gen;
10.   END 

------------------------------------>>>>

Below is my source code which gives me an error message that "Procedure or Function '_FilterByGender' expects parameter '@gen', which was not supplied."

----------------------->>>>>

1. void Button11Click(object sender, EventArgs e) //Report Generator
2.         {
3.             ReportEngine engine = new ReportEngine ();
4.             
5.             ReportParameters repParam = ReportEngine.LoadParameters (reportPath);
6.             
7.             DbProviderFactory factory = DbProviderFactories.GetFactory 
8.                 (css.ProviderName);
9.             DbConnection conn = factory.CreateConnection ();
10.             
11. //            ReportModel reportModel = ReportEngine.LoadReportModel (reportPath);
12.             
13. //            repParam.SqlParameters[0].DataType = DbType.String;
14. //            repParam.SqlParameters[0].ParameterDirection = ParameterDirection.Input;
15. //            repParam.SqlParameters[0].ParameterName = "@gen";
16. //            repParam.SqlParameters[0].ParameterValue = comboBox1.Text;
17.             
18.             repParam.SqlParameters.Add (new ICSharpCode.Reports.Core.SqlParameter ("@gen",
19.                                                           DbType.String, comboBox1.Text)); //comboBox1 contains gender values 'M' & 'F'
20.             
21.             BasePager pageBuilder = engine.CreatePageBuilder
22.                 (reportPath, repParam);
23. 
    
24.             pageBuilder.BuildExportList ();
25.             
26.             engine.PreviewStandardReport (reportPath, repParam);            
27.         }

----------------------------->>>>>

Kindly note that I have also tried commenting the following code:

repParam.SqlParameters.Add (new ICSharpCode.Reports.Core.SqlParameter ("@gen",
                                                          DbType.String, comboBox1.Text));

and uncommenting the following one:

//            repParam.SqlParameters[0].DataType = DbType.String;
//            repParam.SqlParameters[0].ParameterDirection = ParameterDirection.Input;
//            repParam.SqlParameters[0].ParameterName = "@gen";
//            repParam.SqlParameters[0].ParameterValue = comboBox1.Text;

and when the above code is uncommented, the following error is obtained:

"Index was out of range. Must be non-negative and less than the size of the collection."

Values for ReportProperties on the Report2.srd are as follow

1. FileName: C:\Users\Pee-Jay\Documents\SharpDevelop Projects\TestApp\TestApp\Report2.srd
2. ReportName: Report2
3. ReportType: DataReport
4. CommandText: _FilterByGender
5. CommandType: StoredProcedure
6. ConnectionString: Provider=SQLNCLI10.1;Data Source=;User Id=XXXXXX;Password=XXXXXX;Initial Catalog=TestDB
7. DataModel: PullData
8. ParameterCollection: <nothing specified>
9. SqlParameters: <nothing specified>

--------------------------->>>

I have tried getting this right on my own for more than a month now wiithout any luck. Please help fellows.

Thanks