Troubles with Crystal Report

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CrystalReports

i am using Crystal Report with Visual Studio 2012, but the report viewer doesn't show report on runtime, here is my code,

{
SqlConnection con = new SqlConnection("Data Source=Maroof;Initial Catalog=ProSMSDB;Integrated Security=True");
DsStudent ds = new DsStudent();
SqlDataAdapter sda = new SqlDataAdapter("SELECT RegistrationID, FirstName, Address, Contact, DOB, AdmissionDate FROM dbo.ProSMS_StudentRegistration", con);
sda.Fill(ds.StudentView);
CrptStudent report = new CrptStudent();
report.SetDataSource(ds);
CrystalReportViewer1.ReportSource = report;

}