public class Class1
{
    public Class1( )
    {
    }

    public string Method1( )
    {
       return " word";
    }

    public string Method2( string strName )
    {
       return strName;
    }

 }
public class Class2
{
    public Class2( )
    {
    }

    public bool FindMethod( string className , string methodName , Type[ ] paramType)
    {
        Type type = Type.GetType( className , true , true );
        object dObj = Activator.CreateInstance( type );
        MethodInfo method;
        if( paramType!= null )
           method = type.GetMethod( methodName , paramType);
        else
           method = type.GetMethod( methodName , new Type[0] );

        return method != null;
    }
}

//调用：
Response.Write( new Class2( ).FindMethod( "Class1" , "Method1" , null );
Response.Write( new Class2( ).FindMethod( "Class1" , "Method2" , new Type[ ] { typeof( string ) } ) );

------解决方案--------------------
写了代码，但是没发现Ｆorm＿Ｌoad呢！
其他的方法基本上都得到了；
C# code
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Reflection;

namespace WindowsApplication3
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            Type t = typeof(Form1);
            MethodInfo[] info = t.GetMethods();
            foreach (MethodInfo i in info)
            {
                if (i.Name.ToLower().IndexOf("load") > -1)
                {
                    MessageBox.Show(i.Name);
                }
            }

        }

    }
}