Unity 本地文件夹 目录查找，判断有否 没有创建 有删除。

using System.Collections;using System.Collections.Generic;using System.IO;using UnityEngine;public class shanchu : MonoBehaviour {    string path= @"D:\\a2";    void Start () {    }    void Update () {        if (Input.GetKeyDown(KeyCode.Q))        {            if (!Directory.Exists(path))            {                Directory.CreateDirectory(path);                print("文件夹不存在,创建");            }            else            {                DirectoryInfo file1 = new DirectoryInfo(path);                deleteDirs(file1);                file1 = null;                print("文件夹存在,删除");            }        }    }    void deleteDirs(DirectoryInfo dirs)    {        if (dirs == null || (!dirs.Exists))        {            return;        }        DirectoryInfo[] subDir = dirs.GetDirectories();        if (subDir != null)        {            for (int i = 0; i < subDir.Length; i++)            {                if (subDir[i] != null)                {                    deleteDirs(subDir[i]);                }            }            subDir = null;        }        FileInfo[] files = dirs.GetFiles();        if (files != null)        {            for (int i = 0; i < files.Length; i++)            {                if (files[i] != null)                {                    Debug.Log("删除文件:" + files[i].FullName + "__over");                    files[i].Delete();                    files[i] = null;                }            }            files = null;        }        Debug.Log("删除文件夹:" + dirs.FullName + "__over");        dirs.Delete();    }}