C＃.NET：lambda

using System;
using System.Windows.Forms;

namespace WindowsFormsApplication4
{
    public partial class Form1 : Form
    {
        /// <summary>
        /// コンストラクタ
        /// </summary>
        public Form1()
        {
            InitializeComponent();

            MessageBox.Show(GetValue(x => "あいう" + x));
        }

        private string GetValue(Func<string, string> func)
        {
            return func("えお");
        }
    }
}