Dunk

using System.Collections.Generic;
using System.Text;

namespace DesignModelTest.範本方法
{
    /// <summary>
    /// 範本方法:將實作延遲到子類別
    /// </summary>
    class TextFileTransform
    {
        public void DisplayInputFile()
        {
            Console.WriteLine("輸入檔案名稱\t" + InputFileName());
        }
        public void DisplayUsedFormat()
        {
            Console.WriteLine("所採用的格式\t" + FormatName());
        }
        public void DisplayOutputFile()
        {
            Console.WriteLine("輸出檔案名稱\t" + OutputFileName());
        }       
        protected virtual string InputFileName()
        {
            return string.Empty;
        }
        protected virtual string FormatName()
        {
            return string.Empty;
        }
        protected virtual string OutputFileName()
        {
            return string.Empty;
        }
    }
    class Format1 : TextFileTransform
    {
        protected override string InputFileName()
        {
            return "輸入檔一";
        }
        protected override string FormatName()
        {
            return "格式一";
        }
        protected override string OutputFileName()
        {
            return "輸出檔一";
        }
    }
    class Format2 : TextFileTransform
    {
        protected override string InputFileName()
        {
            return "輸入檔二";
        }
        protected override string FormatName()
        {
            return "格式二";
        }
        protected override string OutputFileName()
        {
            return "輸出檔二";
        }
    }
}

            DesignModelTest.範本方法.TextFileTransform t1 = new DesignModelTest.範本方法.Format1();
            DesignModelTest.範本方法.TextFileTransform t2 = new DesignModelTest.範本方法.Format2();
            t1.DisplayInputFile();
            t2.DisplayInputFile();
            t1.DisplayUsedFormat();
            t2.DisplayUsedFormat();
            t1.DisplayOutputFile();                        
            t2.DisplayOutputFile();
            Console.Read();
            #endregion