Oracle C＃调用过程

Question

I have such procedure

PROCEDURE FILL_NDRMCA (res OUT number)  AS  
begin
   ..........
   res:=1;
end FILL_NDRMCA;

when i call procedure from c# i get this exception

ORA-06550: line 1, column 7:
PLS-00306: wrong number or types of arguments in call to 'FILL_NDRMCA'
ORA-06550: line 1, column 7:
PL/SQL: Statement ignored .

my c# code

SWProcedureExecuter pe = new SWProcedureExecuter("OC_YKB.NDRM.FILL_NDRMCA");
pe.AddParameter("res",String.Empty, SWParameterDirection.Output);
pe.Execute();
Int32  resultResultCode = (Int32)pe.GetValue("res");        
Result =resultResultCode;

Can you help me ? Thanks

Answer 1

in the SP the param is "NUMBER"

But when calling the SP you'r using the value "String.Empty" so the SP recives a VARCHAR param.

Try changing:

pe.AddParameter("res", String.Empty, SWParameterDirection.Output);

to

pe.AddParameter("res", 0, SWParameterDirection.Output);