using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;


namespace WindowsFormsApplication9
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            //InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            MessageBox.Show(ccc());
        }     
       
            public string ccc()
            {
                return "Hello";
            }     
           static  public string bbb()
            {
                return "Hello";
            }     

    }


    public partial class Form2 : Form
    {
        public Form2()
        {
       //     InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
// Эта строка как сделать ?
            Form1 x = new Form1();

            MessageBox.Show(x.ccc());
            MessageBox.Show(Form1.bbb());
//
        }
    }
}