vc2010下获取指定文件夹下指定后缀名的文件

using namespace System;
using namespace System::IO;

Int32 main(array<String^> ^args)
{
    Console::WriteLine("功能: 使用通配符检索文件");
    Console::WriteLine("用法: FileList [/s] [pattern]");
    Console::WriteLine("参数: /s      搜索进入子目录，默认不进入");
    Console::WriteLine("      pattern 使用通配符的文件名，即包含?和*的字符串");
    Console::WriteLine("备注: 1.参数顺序可以颠倒");
    Console::WriteLine("      2.如果没有输入命令行参数，程序会询问");
    Console::WriteLine("      3.若pattern为空则默认检索当前目录的*.*");
    Console::WriteLine("      4.pattern应包含合法的目录路径和文件名两部分");
    Console::WriteLine();

    String^ path = Directory::GetCurrentDirectory();
    String^ search_pattern = "*.*";
    SearchOption option = SearchOption::TopDirectoryOnly;

    array<String^> ^_args = args;
    if (args->Length == 0)
    {
        Console::Write("请输入检索指令：");
        String^ buffer = Console::ReadLine();
        if (!String::IsNullOrEmpty(buffer))
        {
            array<Char>^ separator = { L' ' };
            _args = buffer->Split(separator);
        }
    }
    for each (String^ s in _args)
    {
        if (s->ToUpper() == "/S")
        {
            option = SearchOption::AllDirectories;
        }
        else
        {
            path = s->Substring(0, s->LastIndexOf('\\') + 1);
            search_pattern = s->Substring(s->LastIndexOf('\\') + 1);
            if (String::IsNullOrEmpty(search_pattern))
            {
                search_pattern = "*.*";
            }
        }
    }

    try
    {
        array<String^> ^files = Directory::GetFiles(path, search_pattern, option);
        for each (String^ file in files)
        {
            Console::WriteLine(file);
        }
    }
    catch (Exception^ e)
    {
        Console::WriteLine(e->Message);
    }

    Console::Write("\n按<Enter>结束程序...");
    Console::ReadLine();
    return 0;
}