IO 使用File创建文本 streamwrite 写入字符，streamread输出字符

1.利用File.CreateText()来创建文本文件。

代码如下：

 

代码如下：

  static void Main(string[] args)
        {
            string path = @"c:\temp\MyTest.txt";
            if (!File.Exists(path))
            { 
                try
                {
                    using (StreamWriter sw = File.CreateText(path))
                    {
                        sw.WriteLine("this is my name");
                        sw.WriteLine("what about you");
                        sw.Write("?I fine");
                    }
                }
                catch (DirectoryNotFoundException e)
                {
                    Console.WriteLine(e.Message);
                }
                Console.ReadLine();
            }

        }

 

使用streamRead来读取文件的内容

 

 

代码如下：

 string path = @"c:\temp\MyTest.txt";
            if (File.Exists(path))
            {
                File.Delete(path);
            }
            if (!File.Exists(path))
            { 
                try
                {
                    using (StreamWriter sw = File.CreateText(path))
                    {
                        sw.WriteLine("this is my name");
                        sw.WriteLine("what about you");
                        sw.Write("?I fine");
                    }
                }
                catch (DirectoryNotFoundException e)
                {
                    Console.WriteLine(e.Message);
                }
               
                // Open the file to read from.
                using (StreamReader sr = File.OpenText(path))
                {
                    string s = "";
                    while ((s = sr.ReadLine()) != null)
                    {
                        if (s == "?I fine")
                            continue;
                        Console.WriteLine(s);
                    }
                }
                Console.ReadLine();
            }