System.Reflection - MethodInfo class (usage)

A MethodInfo class provides detailed information about a single method of a class or an interface. The reflected method may be a static method or an instance method. The MethodInfoSpy example shows how to obtain the method information of a class including the access modifiers, type or input parameters:

 

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Drawing;
using System.Reflection;

namespace MethodInfoSpy
{
    class Program
    {

        static void Main(string[] args)
        {
            Type type = typeof(Program);
            MethodInfo [] methodInfos = type.GetMethods();
            foreach (MethodInfo methodInfo in methodInfos)
            {
                // retrive method information
                Console.WriteLine("Name: {0}, Public: {1}, Is Static: {2}, Return Type: {3}",
                                    methodInfo.Name,
                                    methodInfo.IsPublic,
                                    methodInfo.IsStatic,
                                    methodInfo.ReturnType.FullName);

                // retrive method parameters information
                ParameterInfo [] paramInfos =  methodInfo.GetParameters();
                foreach (ParameterInfo paramInfo in paramInfos)
                {
                    Console.WriteLine("Parameter Name: {0}, Parameter Type: {1}",
                        paramInfo.Name, paramInfo.ParameterType.FullName);
                }
            }
            Console.ReadLine();
        }


        public void DoNothing()
        {
        }

        public int Add(int x, int y)
        {
            return x + y;
        }
    }
}

A sample of the output follows:

Name: DoNothing, Public: True, Is Static: False, Return Type: System.Void Name: Add, Public: True, Is Static: False, Return Type: System.Int32 Parameter Name: x, Parameter Type: System.Int32 Parameter Name: y, Parameter Type: System.Int32 Name: GetType, Public: True, Is Static: False, Return Type: System.Type Name: ToString, Public: True, Is Static: False, Return Type: System.String Name: Equals, Public: True, Is Static: False, Return Type: System.Boolean Parameter Name: obj, Parameter Type: System.Object Name: GetHashCode, Public: True, Is Static: False, Return Type: System.Int32

 

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