**********************************************************  
 Time Of Error            : 25-08-2015 15:30:04
 Error Message            : Object reference not set to an instance of an object.
 Error Exeption            : 
 Error Place              :    at Design_EDP_DiscountAfterBill.SaveData() in d:\ItDose\ITDOSELIS\Live_Code\ArthDiagnostic\Design\EDP\DiscountAfterBill.aspx.cs:line 240
 Error On Machine         : LIS-PC
 Error Machine IP Address : 192.168.2.33


  **********************************************************  
 Time Of Error            : 25-08-2015 16:46:38
 Error Message            : Object reference not set to an instance of an object.
 Error Exeption            : 
 Error Place              :    at Centre.get_Id() in d:\ItDose\ITDOSELIS\Live_Code\ArthDiagnostic\App_Code\DataLinkLayer\Centre\Centre.cs:line 20
   at Design_Welcome.LoadData() in d:\ItDose\ITDOSELIS\Live_Code\ArthDiagnostic\Design\Welcome.aspx.cs:line 81
 Error On Machine         : LIS-PC
 Error Machine IP Address : 192.168.2.33