C# 控制台读写txt文件代码

            #region Console读TXT文件  
            string strLine;
            try
            {
                FileStream afile = new FileStream(@"E:\C#_Learning\C#_LearningCode\ConsoleApplication2\ConsoleApplication2\abcd.txt", FileMode.Open);
                StreamReader sr = new StreamReader(afile);
                strLine = sr.ReadToEnd();
                Console.WriteLine(strLine);
                sr.Close();
            }
            catch (IOException ee)
            {
                Console.WriteLine("An IO exception has been thrown");
                Console.WriteLine(ee.ToString());
                return;
            }
            #endregion

            #region Console写入TXT文件
            string writestring;
            writestring = "这是一个测试程序";
            try
            {
                FileStream wfile = new FileStream(@"E:\C#_Learning\C#_LearningCode\ConsoleApplication2\ConsoleApplication2\testprogram.txt", FileMode.Open);
                StreamWriter strw = new StreamWriter(wfile);
                strw.Write(writestring);
                strw.Flush();
                strw.Close();
                Console.WriteLine("写入成功");
            }