学步园

1.写入二进制文件：<br /> ①用到的命名空间：<br /> using System.IO;<br /> using System.Text;<br /> ②写进二进制文件：<br /> public Stream s;<br /> public BinaryWriter w;</p> <p>s = File.Create("test.bin");<br /> w = new BinaryWriter(s);//基于所提供的流，用 UTF-8 作为字符串编码来初始化 BinaryWriter 类的新实例。<br /> string str = "这是一行文字。/n";<br /> w.Write(str);<br /> float a = 3.1415F;<br /> w.Write(a);<br /> ulong b = 100000L;<br /> w.Write(b);<br /> int c = 300;<br /> w.Write(c);<br /> decimal d = 4.40983M;<br /> w.Write(d);<br /> double f = 94853.938485928d;<br /> w.Write(f);<br /> char[] g = {'h','e','l','l','o'};<br /> w.Write(g, 0, g.Length);<br /> char h = 'W';<br /> w.Write(h);<br /> bool i = true;<br /> w.Write(i);<br /> w.Flush();//清理当前编写器的所有缓冲区，使所有缓冲数据写入基础设备。<br /> w.Close();//关闭当前的 BinaryWriter 和基础流。</p> <p>2.读取二进制文件：<br /> ①用到的命名空间：<br /> using System.IO;<br /> using System.Text;<br /> ②读二进制文件：<br /> public Stream s;<br /> public BinaryReader r;</p> <p>// 显示二进制文件内容<br /> private void button1_Click(object sender, System.EventArgs e)<br /> {<br /> s = File.OpenRead("test.bin");<br /> r = new BinaryReader(s);<br /> richTextBox1.Text = "显示 String：";<br /> richTextBox1.Text += r.ReadString();<br /> richTextBox1.Text += "显示 Float：";<br /> richTextBox1.Text += r.ReadSingle().ToString() + "/n";<br /> richTextBox1.Text += "显示 ULong：";<br /> richTextBox1.Text += r.ReadUInt64().ToString() + "/n";<br /> richTextBox1.Text += "显示 Int：";<br /> richTextBox1.Text += r.ReadInt32().ToString() + "/n";<br /> richTextBox1.Text += "显示 Decimal：";<br /> richTextBox1.Text += r.ReadDecimal().ToString() + "/n";<br /> richTextBox1.Text += "显示 Double：";<br /> richTextBox1.Text += r.ReadDouble().ToString() + "/n";<br /> richTextBox1.Text += "显示 Char[]：";<br /> richTextBox1.Text += Encoding.ASCII.GetString(r.ReadBytes(5)) + "/n";<br /> richTextBox1.Text += "显示 Char：";<br /> richTextBox1.Text += r.ReadChar().ToString() + "/n";<br /> richTextBox1.Text += "显示 Boolean：";<br /> richTextBox1.Text += r.ReadBoolean().ToString() + "/n";<br /> r.Close();<br /> }</p> <p>