regarding reportviewer.....very urgent

[srishree]

Hi all,i am having a problem populating data using reportviewer.i want to populate the data at runtime dynamically.on my button click event i want to populate the data corresponding to the dropdownlist value.for some reason my button click event gives me an error at ReportViewer1.LocalReport.setparameters(... ).it says "An attempt was made to set a report parameter 'parameter1' that is not defined in this report."below is my code for the button click......i m running a stored proc to populate the reportviewer....i am working on the visual webdeveloper 2005.and sql server 2000.any help would be greatly appreciated... protected void Button1_Click(object sender, EventArgs e) { DataSet ds = new DataSet(); string connstrA = ConfigurationManager.AppSettings["SQLConnectionString"]; SqlConnection myconnectionA = new SqlConnection(connstrA); SqlCommand mycommandA = new SqlCommand("dbo.up_campus_test", myconnectionA); mycommandA.CommandType = CommandType.StoredProcedure; mycommandA.Parameters.Add("@campus", SqlDbType.VarChar, 2).Value = DropDownList1.SelectedItem.Value.ToString(); SqlDataAdapter da = new SqlDataAdapter(mycommandA); da.Fill(ds); ReportViewer1.Visible = true; ReportViewer1.ProcessingMode = ProcessingMode.Local; LocalReport report = ReportViewer1.LocalReport; ReportViewer1.LocalReport.ReportPath = @"C:\Documents and Settings\gradasst\My Documents\My Web Sites\recent\Report\Report.rdlc"; ReportViewer1.LocalReport.DataSources.Add(new ReportDataSource("DataSet2_up_campus_test", ds.Tables[0])); ReportViewer1.LocalReport.DataSources.Clear(); ReportParameter param = new ReportParameter(); param.Name = "parameter1"; param.Values.Add(DropDownList1.SelectedValue.ToString()); ReportParameter[] myReportParams = new ReportParameter[] { param }; ReportViewer1.LocalReport.SetParameters(myReportParams); ReportViewer1.LocalReport.Refresh(); } } Thanks in advance...

hi