Crystal report is not display output(plz help me for this problem)

Question

 ASSALAM-O-ALIKUM TO ALL OF YOU;

I WROTE A STORE PROCEDURE BY THE NAME OF "PATIENTRECORD". ACTUCLLY, I AM WORKING ON CRYSTAL REPORT USING C# AND ASP.NET. IN THIS REPORT, I WILL GIVE "PATIENT REG CODE" AND THEN THIS REPORT GIVE ME INFORMATION IN THIS FORMAT.
 

PATIENT REG CODE	DOCTOR NAME	DATE	PV ID	NAME	ADDRESS	PHONE	TREATMENT	MEDICINE

 IN THIS REPORT , I USED SEVERAL TABLES SUCH AS [CLINIC PATIENT REGISTARTION],[CLINIC DOCTOR],[CLINIC OPD INFO],[CLINIC PV TREATMENTS].
 
IF I SELECT PATIENT REG CODE FROM DROP DOWN LIST AND THEN PRESS "GENERATE PATIENT HISTORY" BUTTON. THERE IS NO RESULT OF REPORT.