C#正則表達式 匹配磁盤路徑和文件名

正則表達式相關知識，參考MSDN文檔： http://msdn.microsoft.com/zh-cn/library/az24scfc.aspx 和  http://msdn.microsoft.com/zh-cn/library/63ew9az0.aspx

class Program
{
     static  void Main( string[] args)
    {
        Regex reg =  new Regex( @" ^(?<fpath>([a-zA-Z]:\\)([\s\.\-\w]+\\)*)(?<fname>[\w]+.[\w]+) ");

        Match result = reg.Match( @" D:\Program Files\AliWangWang\7.10.07C\emotions\TaoDoll\Sniffer.dat ");

         if (result.Success)
        {
            Console.WriteLine( " [Full]: " + result.Value);

            Console.WriteLine( " [Part1]: " + result.Result( " ${fpath} "));
            Console.WriteLine( " [Part2]: " + result.Result( " ${fname} "));
        }

        Console.ReadLine();
    }
} 

簡單整理如下，方便以后調用(支持多后綴名)：

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

namespace ConsoleApplication1
{
     class Program
    {
         ///   <summary>
         ///  路徑分類
         ///   </summary>
         public  enum RouteType
        {
             ///   <summary>
             ///  僅文件名
             ///   </summary>
            NameOnly =  0,
             ///   <summary>
             ///  文件名（包括后綴）
             ///   </summary>
            FileName =  1,
             ///   <summary>
             ///  僅后綴名（包括.）
             ///   </summary>
            FileSuffix =  2,
             ///   <summary>
             ///  除文件名之外的路徑
             ///   </summary>
            PathExceptName =  3,
             ///   <summary>
             ///  除后綴之外的路徑
             ///   </summary>
            PathExceptSuffix =  4
        }
         ///   <summary>
         ///  程序入口函數
         ///   </summary>
         ///   <param name="args"></param>
         static  void Main( string[] args)
        {
             string strPath =  @" D:\Program Files\Advanced PDF Password Recovery\Sniffer.dat.doc.bak.zip ";

            Console.WriteLine(GetPartRoute(strPath, RouteType.NameOnly));
            Console.WriteLine(GetPartRoute(strPath, RouteType.FileName));
            Console.WriteLine(GetPartRoute(strPath, RouteType.FileSuffix));
            Console.WriteLine(GetPartRoute(strPath, RouteType.PathExceptName));
            Console.WriteLine(GetPartRoute(strPath, RouteType.PathExceptSuffix));

            Console.ReadLine();
        }
         ///   <summary>
         ///  正則獲取文件路徑
         ///   </summary>
         ///   <param name="strRoute"> 完整文件名 </param>
         ///   <param name="rType"> 要獲取路徑類型 </param>
         ///   <returns></returns>
         public  static  string GetPartRoute( string strRoute, RouteType rType)
        {
             string strResult =  string.Empty;

            Regex regex =  new Regex( @" ^(?<fpath>([a-zA-Z]:\\)([\s\.\-\w]+\\)*)(?<fname>[\w]+)(?<namext>(\.[\w]+)*)(?<suffix>\.[\w]+) ");

            Match result = regex.Match(strRoute);

             if (result.Success)
            {
                 switch (rType)
                {
                     case RouteType.NameOnly:
                        strResult = result.Result( " ${fname} ") + result.Result( " ${namext} "); break;
                     case RouteType.FileName:
                        strResult = result.Result( " ${fname} ") + result.Result( " ${namext} ") + result.Result( " ${suffix} ");  break;
                     case RouteType.FileSuffix:
                        strResult = result.Result( " ${suffix} ");  break;
                     case RouteType.PathExceptName:
                        strResult = result.Result( " ${fpath} ");  break;
                     case RouteType.PathExceptSuffix:
                        strResult = result.Result( " ${fpath} ") + result.Result( " ${fname} ") + result.Result( " ${namext} ");  break;
                     default:
                        strResult = strRoute;  break;
                }
            }

             return strResult;
        }
    }
}

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