Parameter count mismatch

Hi
I have webservice that works fine.when i create it as static object

Public static object webser(string asmxurl,string methodname,string service,obj ()args)
Webclient c=new webclient();
Stream str=c.openread(asmxurl);

Servicedescription ds= new servicedescription.read(str);
Invoke webservice
Methodinfo mi=wsvcc.gettype().getmethod(methodname);
Return mi.invoke(wsvcc.args);error here.