How Do You Change The Data Source For A Report?

May 16, 2007

I have a report that I want to setup as cached on the server.

As I understand it to do this I need to use stored credentials in the report's data source so that the report always runs with the same credentials.

Now how can I do this for a report that already exists?

I created a new Shared DataSource that has the credentials I want to use, but I can't seem to change the data source a report uses.

Thanks.

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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.