how to call private method in c# with useing its parameters

Question

var mpc=new class();
Type type=mpc.getype();
var output = (string)type.InvokeMember("Method Name";MyPrivateFunc"  BindingFlags.Instance | BindingFlags.InvokeMethod|
                                   BindingFlags.NonPublic, null, mpc,
                                   new object[] {"Is Exposed private Member ? "});

i can call simply method with the help of these code but when i use parameters its error occur why????????