C#生成文本文件并读写数据

string txt = @"E:\homework\data.txt";//设置文本生成的路径
FileStream fileStream = new FileStream(txt, FileMode.Append);//保证不覆盖原内容
StreamWriter streamWriter = null;
streamWriter = new StreamWriter(fileStream);
streamWriter.Write("这是数据~");
streamWriter.Close();

FileStream stream = new FileStream(@"E:\homework\data.txt", FileMode.Open);
StreamReader reader = new StreamReader(stream);
//this.TextBox3.Text = reader.ReadLine(); //一次性读取一行
TextBox3.Text = reader.ReadToEnd();  //一次性读取全部数据
reader.Close();
stream.Close();

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