Crystal report asks for database login while opening any report all time.

See more:

C#

SQL-Server

CrystalReports

CReport.SimpleCrystalReportViewer simple = new CReport.SimpleCrystalReportViewer(); // Form 
simple.Show();
CReport.CrystalReportCustomerContactList report = new CReport.CrystalReportCustomerContactList();
report.SetDatabaseLogon(db.UserName, db.Password, db.ServerName, db.DataBase);
report.Load();

simple.crystalReportViewer1.ReportSource = report;
simple.crystalReportViewer1.RefreshReport(); 

What I have tried:

I am, new to Crystal Reports, I made Crystal Report and while I open the report during run time, it asks for database login details. So I need to type the login details every time I click for a report during run time. I tried to pass Login details to CrystalReportViewer but still problem persist. Kindly help me with this issue