文本的读和写

读:TextBox1.Text=File.ReadAllText("d:/b.txt",Encoding.Default); 写:File.WriteAllText("d:/a.txt", TextBox1.Text, Encoding.Default); 追加:File.AppendAllText("d:/a.txt", TextBox1.Text, Encoding.Default); 最简单的方法 写文件     StreamWriter sw = new StreamWriter(fileName);     sw.Write(textBox1.Text);   sw.Close(); 读文件     StreamReader sr = new StreamReader(fileName);     textBox1.Text = sw.ReadToEnd();   sr.Close();  //写                StreamWriter sw = File.AppendText("log_zd.htm");                string jilu = "http://zhidao.baidu.com/question/" + counter + ".html
";                sw.WriteLine(jilu);                sw.Close();//读            StreamReader file = new StreamReader("c://标签.txt", Encoding.Default);            //将文本放到数组中            string[] sz = new string[counter];            while ((line = file.ReadLine()) != null)            {                counter1++;                sz[counter1 - 1] = line;                //Console.WriteLine(line);            }