C#正则表达式 匹配磁盘路径和文件名

正则表达式相关知识，参考MSDN文档：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();
    }
} 

简单整理如下，方便以后调用(支持多后缀名)：

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>
        /// 路径分类
        /// </summary>
        public enum RouteType
        {
            /// <summary>
            /// 仅文件名
            /// </summary>
            NameOnly = 0,
            /// <summary>
            /// 文件名（包括后缀）
            /// </summary>
            FileName = 1,
            /// <summary>
            /// 仅后缀名（包括.）
            /// </summary>
            FileSuffix = 2,
            /// <summary>
            /// 除文件名之外的路径
            /// </summary>
            PathExceptName = 3,
            /// <summary>
            /// 除后缀之外的路径
            /// </summary>
            PathExceptSuffix = 4
        }
        /// <summary>
        /// 程序入口函数
        /// </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>
        /// 正则获取文件路径
        /// </summary>
        /// <param name="strRoute">完整文件名</param>
        /// <param name="rType">要获取路径类型</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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