C# txt文件的读取与写入

C#创建记事本
方法一：
//创建对象
FileStream stream = new FileStream(@"d:\aa.txt",FileMode.Create);//fileMode指定是读取还是写入
StreamWriter writer = new StreamWriter(stream);
writer.WriteLine("123456");//写入一行，写完后会自动换行
writer.Write("abc");//写完后不会换行
writer.WriteLine("ABC");
writer.Close();//释放内存
stream.Close();//释放内存

方法二：
StreamWriter writer = new StreamWriter("d:\\aa.txt");
writer.WriteLine("123456");
writer.Write("abc");
writer.WriteLine("ABC");
writer.Close();

C#读取记事本文件
方法一：
FileStream stream = new FileStream(@"d:\aa.txt", FileMode.Open);
StreamReader reader = new StreamReader(stream);
//this.textbox1.Text = reader.ReadLine(); //一次性读取一行
this.textbox1.Text = reader.ReadToEnd();  //一次性读取全部数据
reader.Close();
stream.Close();

方法二：
StreamReader reader = new StreamReader(@"d:\\aa.txt");
this.textbox1.Text = reader.ReadToEnd();
reader.Close();