using System;

using System.Linq.Expressions;

​

public class A

{

    public void HandleEventWithArg(int arg) 

    { 

        Console.WriteLine("Method called! {0}", arg);

​

    }

}

​

public class Program

{

    public static MethodCallExpression GetCallMethodExpression(object obj)

    {

       var methodInfo = obj.GetType().GetMethod("HandleEventWithArg");

       var argExpression = Expression.Constant(5);

       return Expression.Call(Expression.Constant(obj), methodInfo, argExpression);

    }

    public static void Main()

    {

       var expr = GetCallMethodExpression(new A());

       Expression.Lambda(expr).Compile().DynamicInvoke();      

    }

}