List<string> SerchName = new List<string>(); //要查找的字段
     public List<string> SerchName1
     {
       get { return SerchName; }
       set { SerchName = value; }
}

//設(shè)置查找文件類型
     private int i;
     public int I
     {
       get { return i; }
       set { i = value; }
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.IO;
namespace Serch_File
{
   class FindFile
{
    public List<string> lst1 = new List<string>();
     public List<string> getFile(string path, string extName, int i)//創(chuàng)建一個(gè)List<FileInfo>類型的函數(shù) 
    {
      getdir(path, extName, i);//傳入路徑、搜索的字段 、將要搜索的類型
      return lst1;
    }
     private void getdir(string path, string extName, int i)
     {
       try
       {
         //獲取文件夾列表
         string[] dirs = Directory.GetDirectories(path);　　　　　　　　　　　 DirectoryInfo fdir = new DirectoryInfo(path);
         FileInfo[] file = fdir.GetFiles();
         //當(dāng)前目錄文件或目錄不為空
         if (file.Length != 0 || dirs.Length != 0)
         {
           foreach (FileInfo f in file)
           {
             switch (i)
            {
              case 0: if (extName == f.Name) //根據(jù)文件名匹配上
                {
                  lst1.Add(f.Name);
                 } break;
              case 1: if (extName == f.Extension) //根據(jù)后綴名匹配上
                 {
                   lst1.Add(f.FullName);
                 } break;
             }
           }
           foreach (string d in dirs)
           {
             getdir(d, extName, i);//遞歸   
           }
         }
       }
       catch
       {
 
       }
     }
   }
}