Simple PrivateObject

PrivateObject<T>.cs

// Test Class
    public class Demo {
        private string send (String msg) => $"{msg} : Sent.";
    }

// Test Util 
    public class PrivateObject<T> where T : class, new () {
        private T obj;
        public PrivateObject () {
            obj = new T ();
        }
        public TR callPrivate<TR> (string methodName, params object[] values) {
            return (TR) typeof (T).InvokeMember (methodName,
                BindingFlags.InvokeMethod | BindingFlags.NonPublic | BindingFlags.Public |
                BindingFlags.Instance, null, obj, values);
        }
    }


// Call Test
var result =  new PrivateObject<Demo>().callPrivate<String>("send", "Hello");
Console.WriteLine($"{result}");