Question

I coppied and pasted this example, and it seems to fail. Why is MethodBase null?

http://msdn.microsoft.com/en-us/library/system.reflection.parameterinfo.isout.aspx

edit:
here is a link to my code:
http://img689.imageshack.us/img689/3453/94123952.png

Let me know where my copy & paste is wrong.

here is the code for those that cant view the image:

#region

using System;
using System.Reflection;

#endregion

namespace ConsoleApp
{
class parminfo
{
    public static void mymethod(
       int int1m, out string str2m, ref string str3m)
    {
        str2m = "in mymethod";
    }

    public static int Main(string[] args)
    {
        Console.WriteLine("\nReflection.Parameterinfo");

        //Get the ParameterInfo parameter of a function.

        //Get the type.
        Type Mytype = Type.GetType("parminfo");

        //Get and display the method.
        MethodBase Mymethodbase = Mytype.GetMethod("mymethod");
        Console.Write("\nMymethodbase = " + Mymethodbase);

        //Get the ParameterInfo array.
        ParameterInfo[] Myarray = Mymethodbase.GetParameters();

        //Get and display the IsOut of each parameter.
        foreach (ParameterInfo Myparam in Myarray)
        {
            Console.Write("\nFor parameter # " + Myparam.Position
               + ", the IsOut is - " + Myparam.IsOut);
        }
        return 0;
    }
}

}

Answer 1

Your problem is this code:

Type.GetType("parminfo")

This will try to find a type with a fully qualified name parminfo, but there isn’t one such. Your class is declared in a namespace, and therefore its fully qualified name is ConsoleApp.parminfo.

Better yet, just use typeof(parminfo).