private void BindCrystalReport()
 {
    //Imposto le credenziali di accesso
    CrystalDecisions.Shared.TableLogOnInfo credentials = new CrystalDecisions.Shared.TableLogOnInfo();
    credentials.ConnectionInfo.DatabaseName = "mio database";
    credentials.ConnectionInfo.UserID = "mio userid";
    credentials.ConnectionInfo.Password = "mia password";
    credentials.ConnectionInfo.ServerName = "nome del mio server";

    //successivamente associo i dai all'oggetto CrystalReportViewer1
    CrystalReportViewer1.LogOnInfo.Add(credentials );
    CrystalReportViewer1.ReportSource = Session["report.crystal"];
    CrystalReportViewer1.ShowAllPageIds = true;   
    //fa il biding
     CrystalReportViewer1.DataBind();
}