Ho To Make Data Source Web Method Execute Once Per A Report?

Jan 11, 2007

My report works with XMLDP data provider and obtains source data as a
result of a web method call. This memthod returns all data necessary
for the report. Thus, all of about 20 report datasets query the same
web method with the same parameters and then select appropriate data
with different ElementPath expressions. It's so inefficient and
time-consuming! I cant have respective web method for every dataset.
How can I configure SSRS to call web method only once while the report
is executing? Or how can I leverage the performance at all?

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An Error Has Occurred During Report Processing. A Data Source Instance Has Not Been Supplied For The Data Source DetailDS_get_o

Mar 13, 2008

hi ,

i am trying for a drill through report (rdlc)

ihave written the following code in drill through event of reportviewer, whenever i click on the first report iam getting the error like

An error has occurred during report processing.

A data source instance has no
t been supplied for the data source "DetailDS_get_orderdetail".

the code is

using System;

using System.Data;

using System.Data.SqlClient;

using System.Configuration;

using System.Collections;

using System.Web;

using System.Web.Security;

using System.Web.UI;

using System.Web.UI.WebControls;

using System.Web.UI.WebControls.WebParts;

using System.Web.UI.HtmlControls;

//using Microsoft.ApplicationBlocks.Data;

using Microsoft.Reporting.WebForms;

using DAC;

public partial class _Default : System.Web.UI.Page

{

protected void Page_Load(object sender, EventArgs e)

{

ReportViewer1.Visible = false;

}

protected void Button1_Click(object sender, EventArgs e)

{

DAC.clsReportsWoman obj = new clsReportsWoman();

DataSet ds = new DataSet();

ds = obj.get_order();

ReportViewer1.LocalReport.DataSources.Clear();

ReportDataSource reds = new ReportDataSource("DataSet1_get_order", ds.Tables[0]);

ReportViewer1.LocalReport.DataSources.Add(reds);

ReportViewer1.LocalReport.ReportPath = "C:/Documents and Settings/km63096/My Documents/Visual Studio 2005/WebSites/drillthrurep/Report.rdlc";

ReportViewer1.LocalReport.Refresh();

ReportViewer1.Visible = true;

}

protected void ReportViewer1_Drillthrough(object sender, DrillthroughEventArgs e)

{

DAC.clsReportsWoman obj = new clsReportsWoman();

ReportParameterInfoCollection DrillThroughValues =

e.Report.GetParameters();

foreach (ReportParameterInfo d in DrillThroughValues)

{

Label1.Text = d.Values[0].ToString().Trim();

}

LocalReport localreport = (LocalReport)e.Report;

string order_id = Label1.Text;

DataSet ds = new DataSet();

ds = obj.get_orderdetail(order_id);

ReportViewer1.LocalReport.DataSources.Clear();

ReportDataSource reds = new ReportDataSource("DetailDS_get_orderdetail", ds.Tables[0]);

ReportViewer1.LocalReport.DataSources.Add(reds);

ReportViewer1.LocalReport.ReportPath = Server.MapPath(@"Reportlevel1.rdlc");

ReportViewer1.LocalReport.Refresh();

}

}

the code in method get_orderdetail(order_id) is

public DataSet get_orderdetail(string order_id)
{
SqlCommand cmd = new SqlCommand();
DataSet ds = new DataSet();
cmd.Parameters.Add("@order_id", SqlDbType.VarChar, 50);
cmd.Parameters["@order_id"].Value = order_id;
ds = SQLHelper.ExecuteAdapter(cmd, CommandType.StoredProcedure, "dbo.get_orderdetail");
return (ds);
}pls help me.