Bind (Load) Crystal Report without using DataSet in ASP.Net

Do you have any ideas how to load a crystal report had been built in asp classic into asp.net using C#?

CR had been built aready in asp framework.

Now I need to load it in ASP.Net frame work and only populate it

crystalReport.SetDataSource(ds);
CrystalReportViewer1.ReportSource = crystalReport;

I do not need data set.  It has been built in CR asp classic