Here is the code i've written this inside the page load event of crystal Report viewer
public DataTable dt = new DataTable();
private void crystalReportViewer1_Load(object sender, EventArgs e)
Reports.CrystalReport crt = new Reports.CrystalReport ();
crystalReportViewer1.ReportSource = crt;
in that datatable i've stored the value which i want to print.
Hope it helps you.