1 class Program_Utf8
 3        static void Main(string[] args)
 5            String folderPath = @"E:\文件夹路径\";
 7            ParseDirectory(folderPath, "*.cs", (filePath) =>
 9                string text = "";
10                using (StreamReader read = new StreamReader(filePath, Encoding.Default))
11                {
12                    string oldtext = read.ReadToEnd();
13                    text = oldtext;
14                    text = text.Replace("\n", "\r\n");
15                    text = text.Replace("\r\r\n", "\r\n"); // 防止替换了正常的换行符      
16                    if (oldtext.Length == text.Length)
17                    {
18                        Console.WriteLine(filePath.Substring(filePath.LastIndexOf("\\") + 1) + " 不需要标准化");
19                        return; // 如果没有变化就退出                  
20                    }
21                }
22                File.WriteAllText(filePath, text, Encoding.UTF8); //utf-8格式保存，防止乱码
24                Console.WriteLine(filePath.Substring(filePath.LastIndexOf("\\") + 1) + " 行尾标准化完成");
25            });
27            Console.ReadKey();
28        }
30        /// <summary>递归所有的目录，根据过滤器找到文件，并使用委托来统一处理</summary>
31        /// <param name="info"></param>
32        /// <param name="filter"></param>
33        /// <param name="action"></param>
34        static void ParseDirectory(string folderPath, string filter, Action<string> action)
35        {
36            if (string.IsNullOrWhiteSpace(folderPath)
37                || folderPath.EndsWith("debug", StringComparison.OrdinalIgnoreCase)
38                || folderPath.EndsWith("obj", StringComparison.OrdinalIgnoreCase)
39                || folderPath.EndsWith("bin", StringComparison.OrdinalIgnoreCase))
40                return;
42            Console.WriteLine("读取目录：" + folderPath);
44            // 处理文件
45            string[] fileNameArray = Directory.GetFiles(folderPath, filter);
46            if (fileNameArray.Length > 0)
47            {
48                foreach (var filePath in fileNameArray)
49                {
50                    action(filePath);
51                }
52            }
53            else
54            {
55                Console.WriteLine("未发现文件！");
56            }
58            Console.WriteLine("====================================");
60            //得到子目录，递归处理
61            string[] dirs = Directory.GetDirectories(folderPath);
62            var iter = dirs.GetEnumerator();
63            while (iter.MoveNext())
64            {
65                string str = (string)(iter.Current);
66                ParseDirectory(str, filter, action);
67            }
68        }
69    }