Problem in Creating Crystal Report

CrystalReportViewer report = new CrystalReportViewer();

you need to create the .rpt first and then load it to ReportDocument

Try this :

protected void Page_Load(object sender, EventArgs e)
    {
 
        ReportDocument crypt = new ReportDocument();
        CrystalReportViewer1.Visible = true;
        DataSet ds = new DataSet("DataSet1");
        DataTable table = new DataTable("DataSet1");
 
        table.Columns.Add("username", typeof(System.String));
        table.Columns.Add("bookno", typeof(System.String));
 
        DataRow row = table.NewRow();
        row["username"] = "Farooq";
        row["bookno"] = "hyden";
        ReportDocument crypt = new ReportDocument();
            string path="D:\\Projects\\CrystalDemo\\CrystalDemo\\CrystalReport1.rpt";
            crypt.Load(path);
            crypt.SetDataSource(ds);
            crystalReportViewer1.ReportSource = crypt;
            crystalReportViewer1.Refresh();
        
 
    }

for more details check THIS[^]

hope it helps :)

protected void Page_Load(object sender, EventArgs e)
{

Reportdocument report = new Reportdocument();//here i am getting error
DataSet ds = new DataSet("DataSet1");
DataTable table = new DataTable("DataSet1");

table.Columns.Add("username", typeof(System.String));
table.Columns.Add("bookno", typeof(System.String));

DataRow row = table.NewRow();
row["username"] = "Farooq";
row["bookno"] = "hyden";
report.SetDataSource(ds);
CrystalReportViewer1.ReportSource = report;


}


replace....your code with the above.........i hope it will help you