programatically pass the connection string to the ssrs reports

[vinayak.v]

hi... to all
i've created ssrs reports local following is my code..

public void source(string tbname,string Rptname)
    {
        ReportViewer1.Visible = true;
        string myQuery = "select * from " + tbname;
        SqlConnection myConnection = new SqlConnection(ConnectionString);
        SqlCommand myCommand = new SqlCommand(myQuery, myConnection);
        myCommand.Connection.Open();
        SqlDataAdapter da = new SqlDataAdapter(myCommand);
        DataSet dt = new DataSet();
        da.Fill(dt);


        //ReportParameter[] p = new ReportParameter[1];
        //p[1] = new ReportParameter("@p_dno", "5");
        //this.ReportViewer1.LocalReport.SetParameters(p);
        //DataSet dt = new DataSet();
        //dt = p;
        ReportViewer1.LocalReport.ReportPath = Rptname + ".rdlc" ;
        ReportViewer1.ProcessingMode = Microsoft.Reporting.WebForms.ProcessingMode.Local;
       ReportDataSource datasource = new ReportDataSource("employeeDataSet_" + tbname , dt.Tables[0]);
        ReportViewer1.LocalReport.DataSources.Clear();
        ReportViewer1.LocalReport.DataSources.Add(datasource);

    }

now it works good..
as i expected...

but i want to pass the datasource connection string from here is there any
way to pass the datasource programatically....