.rdlc Report - Cannot create a data reader for dataset 'DataSet1'

Question

I have created a .rdlc-Report under VS 2012 using the report wizard and added data source and dataset. When I try to render the report using the code below I get following e

Answer 1

Showing error cannot create data reader for data set of dataset1:

private void frm_report_Load(object sender, EventArgs e)
{

    this.reportViewer1.RefreshReport();
    reportViewer1.LocalReport.Refresh();
    reportViewer1.LocalReport.DataSources.Clear();
    reportViewer1.LocalReport.ReportEmbeddedResource = "cruds_reports.Report1.rdlc";

    SqlCommand cmd = new SqlCommand("select * from tbl_info",con);
    SqlDataAdapter da = new SqlDataAdapter();
    DataSet ds = new DataSet();
    da.Fill(ds);
    DataTable dt = new DataTable();
    dt = ds.Tables[0];
    if (dt.Rows.Count>0)
    {
        rds = new ReportDataSource("DataSet1", dt);
        reportViewer1.LocalReport.DataSources.Add(rds);
        rds.Value = dt;
        reportViewer1.LocalReport.Refresh();
        reportViewer1.RefreshReport();
    }
    else
    {
        return;
    }

}