郁闷呀~速度来人，死人啦~ static void Main(string[] args)

Question

static void Main(string[] args)
        {
            List<string> lt = new List<string>();
        }
        public static void SayHi()
        {
            
            Console.WriteLine("你好！你这个同志！");
        }为什么我在SayHi()方法里不能调用lt
怎样才能解决这个问题》

Answer 1

List <string> lt = new List <string>();
static void Main(string[] args)
        {
            
        }
        public static void SayHi()
        {
           
            Console.WriteLine("你好！你这个同志！");
        } 

Answer 2

 List <string> lt；
static void Main(string[] args)
        {
            lt = new List <string>();
        }

Answer 3

static void Main(string[] args) 
        { 
            List <string> lt = new List <string>(); 
            类名.SayHi(lt);
        } public static void SayHi(List<string> list) 
        { 
            //在这里使用list--即外面传递过来的lt
            Console.WriteLine("你好！你这个同志！"); 
        } 

Answer 4

static List <string> lt = new List <string>(); 
public static void SayHi() 
{ 
}

Answer 5

static List <string> lt = new List <string>(); 

Answer 6

LZ没有定义list对象啊，支持1L的

Answer 7

学习总结：竟然要加个STATIC
不错不错~学到很多
哈哈，兄弟们你们真牛呀！

Answer 8

并共享上，为解决这个问题的
无聊做的遍历找。MP3的文件~哈哈，无聊。。~~
 static List<string> lt = new List<string>();
        static void Main(string[] args)
        {
            string path = @"c:\\1";
            Getfile(path);
            Console.WriteLine("现在我要查找.MP3文件了哦！");
            foreach (string f in lt)
            {
                Console.WriteLine(f);
 
            }
            Console.Read();            
        }        public static void Getfile(string path)
        {
          
            try
            {
                DirectoryInfo dir = new DirectoryInfo(path);
                foreach(DirectoryInfo var in dir.GetDirectories())
                {
                    Console.WriteLine(var.ToString());
                    FileInfo[] file = dir.GetFiles();
                    foreach (FileInfo f in file)
                    {
                        Console.WriteLine(f.ToString());
                        switch (f.Extension.ToString())
                        {
                            case ".txt":
                                Console.WriteLine("这是文档文件");
                                break;
                            case ".mp3":
                                Console.WriteLine("这是MP3文件");
                                lt.Add(f.ToString());
                                break;
                            case ".mp4":
                                Console.WriteLine("这是MP4文件");
                                break;
                            default:
                                Console.WriteLine("这是未知文件！");
                                break;
                        }
                    }
                    Getfile(dir + "\\" + var);
                }
            }
            catch (Exception ex)
            {
                Console.WriteLine("有些保密文件不能读取！");
            }
            finally
            {            }

Answer 9

我觉得楼主应该这样声明方法
public static List <string> Getfile(string path)
而不是声明一个类级变量

Answer 10

static List <string> lt = new List <string>(); 
static void Main(string[] args) 
        { 
            
        } 
        public static void SayHi() 
        { 
          
            Console.WriteLine("你好！你这个同志！"); 
        }

Answer 11

static void Main(string[] args)
        {
            List<string> lt = new List<string>();
            string path = @"F:\KuGou1";
            Getfile(path,lt);
            Console.WriteLine("现在我要查找.MP3文件了哦！");
            foreach (string f in lt)
            {
              Console.WriteLine(f);
            }
            Console.Read();            
        }        public static List<string> Getfile(string path,List<string> lt)
        {
          
            try
            {
                DirectoryInfo dir = new DirectoryInfo(path);
                foreach(DirectoryInfo var in dir.GetDirectories())
                {
                    Console.WriteLine(var.ToString());
                    FileInfo[] file = dir.GetFiles();
                    foreach (FileInfo f in file)
                    {
                        Console.WriteLine(f.ToString());
                        switch (f.Extension.ToString())
                        {
                            case ".txt":
                                Console.WriteLine("这是文档文件");
                                break;
                            case ".mp3":
                                Console.WriteLine("这是MP3文件");
                                lt.Add(f.ToString());
                                break;
                            case ".mp4":
                                Console.WriteLine("这是MP4文件");
                                break;
                            default:
                                Console.WriteLine("这是未知文件！");
                                break;
                        }
                    }
                    Getfile((dir + "\\" + var),lt);
                }
            }
            catch (Exception ex)
            {
                Console.WriteLine("有些保密文件不能读取！");
            }
            finally
            {
             
            }
            return lt;
        }
    }是不是该改成这样？

Answer 12

lt=Getfile(path); 
public static List <string> Getfile(string path)其他地方自己再调一下

Answer 13

难道是括号错误？？？
static void Main(string[] args) 
        { 
            List <string> lt = new List <string>(); 
        } 
        public static void SayHi() 
        { 
            
            Console.WriteLine("你好！你这个同志！"); 
        } 
改成
static void Main(string[] args) 
        { 
            List <string> lt = new List <string>(); 
        
        public static void SayHi() 
        { 
            
            Console.WriteLine("你好！你这个同志！"); 
        } 
 
     }

Answer 14

 static List<string> lt = new List<string>(); 
        static void Main(string[] args)
        {
            SayHi();
        }
        public static void SayHi()
        {
            
            Console.WriteLine("你好！你这个同志！");
        } 

Answer 15

It放在外面实例化啊，或者在Sayhi里面实例化就行了