Reporting Service in ASP.NEt Using C#

I get this Error "

A data source instance has not been supplied for the data source 'DataSet1'.

instance is there...help me out please

My code is Correct...??

using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

using System.Web.UI;

using System.Web.UI.WebControls;

using System.Data;

using System.Data.SqlClient;

using Microsoft.Reporting.WebForms;

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

{

protected void Page_Load(object sender, EventArgs e)

{

if (!IsPostBack)

{

ReportViewer1.ProcessingMode = ProcessingMode.Local;

ReportViewer1.LocalReport.ReportPath = Server.MapPath("~/Report.rdlc");

UserInformation dsEmployees = GetData("select top 10 * from UserInformation");

ReportDataSource datasource = new ReportDataSource("UserInformation", dsEmployees.Tables[0]);

ReportViewer1.LocalReport.DataSources.Clear();

ReportViewer1.LocalReport.DataSources.Add(datasource);

}

private UserInformation GetData(string query)

{

string conString = @"Data Source=######;Initial Catalog=Example;Integrated Security=True";

SqlCommand cmd = new SqlCommand(query);

using (SqlConnection con = new SqlConnection(conString))

{

using (SqlDataAdapter sda = new SqlDataAdapter())

{

cmd.Connection = con;

sda.SelectCommand = cmd;

using (UserInformation dsEmployees = new UserInformation())

{

sda.Fill(dsEmployees, "DataTable1");

return dsEmployees;

}

modify you GetData Method like

private UserInformation GetData(string query)

{

string conString = @"Data Source=######;Initial Catalog=Example;Integrated Security=True";

SqlCommand cmd = new SqlCommand(query);

using (SqlConnection con = new SqlConnection(conString))

{

using (SqlDataAdapter sda = new SqlDataAdapter())

{

cmd.Connection = con;

sda.SelectCommand = cmd;

DateSet ds=new DataSet();

sda.Fill(ds, "DataTable1");

DataTable dt=dt.Tables[0];

List< UserInformation> userInformation = new List< UserInformation>();

userInformation = (from DataRow dr in dt.Rows

select new UserInformation()

{

//Convert dataTable to list here like

EmpId= Convert .ToInt32 (dr["EmpId"]),

}).ToList();

return dsEmployees;

}