数据流的所有类 Winform界面 （技术改变世界cnblog）

废话不多说，前面2篇 写过 文件与文件夹的类，今天写流，在学习过程分析出来。

流在.net里是由Steam类表示的，该类是抽象类，无法实例化。
处理文件输入输出的流：
1.FileSteam
2.BufferedStream
3.CryptoStream
4.MemoryStream
5.NetworkStream


使用文件流读写文件 FileStream，可以读写任何文件，默认是同步
读写文本文件  使用StreamReader类与StreamWriter类（用于处理文本文件）

代码如下：

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.IO;

namespace Sream_For_All
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
        //初始化的东西
        private void Form1_Load(object sender, EventArgs e)
        {
            txtPath1.ReadOnly = true;
            txtPath2.ReadOnly = true;
            richTextBox1.Multiline = true;
            richTextBox2.Multiline = true;
            btnWrite1.Enabled = false;
            btnWrite2.Enabled = false;
        }
        private void txtDest_TextChanged(object sender, EventArgs e)
        {
            btnWrite1.Enabled = true;
        }
        private void txtDest2_TextChanged(object sender, EventArgs e)
        {
            btnWrite2.Enabled = true;
        }

        //FileStream模块

        private void btnScan_Click(object sender, EventArgs e)
        {
            richTextBox1.Clear();
            if (openFileDialog1.ShowDialog() == DialogResult.OK)
            {
                txtPath1.Text = openFileDialog1.FileName;//获取文件名包含路径
                FileInfo file = new FileInfo(txtPath1.Text);
                FileStream filestream = file.OpenRead();
                byte[] buffer = new byte[1024];
                int readSize = filestream.Read(buffer, 0, 1024);
                long i = filestream.Position;
                string temp = Encoding.Default.GetString(buffer);
                richTextBox1.Text = "读取的字节数：" + readSize.ToString() + "\n";
                richTextBox1.AppendText("当前流的位置：" + i + "\n");
                richTextBox1.AppendText(string.Format("支持读取：{0}\n支持查找：{0}\n支持写入：{0}", filestream.CanRead, filestream.CanSeek, filestream.CanWrite));
                richTextBox1.AppendText("读取的内容：" + temp + "\n");
                filestream.Close();
            }
        }

        private void btnWrite_Click(object sender, EventArgs e)
        {
            richTextBox1.Clear();
            if (openFileDialog1.ShowDialog() == DialogResult.OK)
            {
                //源 流

                txtPath1.Text = openFileDialog1.FileName;//源文件
                FileInfo file = new FileInfo(txtPath1.Text);
                FileStream fsRead = file.OpenRead();
                //目标流
                FileStream fsWrite = File.Open(txtDest1.Text, FileMode.Create);
                int WriteSize = 1024;
                byte[] buffer = new byte[WriteSize];//定义缓冲区
                //读取
                int ReadSize = fsRead.Read(buffer, 0, WriteSize);//读了多少字节
                fsWrite.Write(buffer, 0, ReadSize);
                fsRead.Close();
                fsWrite.Flush();
                fsWrite.Close();
                richTextBox1.Text = "开始读取....\n";
                richTextBox1.AppendText("内容传递成功！");

            }
        }
        //StreamRW  模块
        private void btnRead_Click(object sender, EventArgs e)
        {
            richTextBox2.Clear();
            if (openFileDialog1.ShowDialog() == DialogResult.OK)
            {
                txtPath2.Text = openFileDialog1.FileName;//显示文件及路径
                using (StreamReader strRead = new StreamReader(txtPath2.Text, Encoding.Default))//这样可以不写close();
                {

                    string temp = strRead.ReadToEnd();
                    richTextBox2.Text = "开始读取...\n";
                    richTextBox2.AppendText(temp);
                }



            }
        }

        private void btnWrite2_Click(object sender, EventArgs e)
        {
            richTextBox2.Clear();

            if (openFileDialog1.ShowDialog() == DialogResult.OK)
            {
                txtPath2.Text = openFileDialog1.FileName;//源文件及路径
                using (StreamReader strRead = new StreamReader(txtPath2.Text, Encoding.Default))//这样可以不写close();
                {

                    string temp = strRead.ReadToEnd();
                    using (StreamWriter strWrtie = new StreamWriter(txtDest2.Text))
                    {
                        strWrtie.Write(temp);
                    }


                    richTextBox2.Text = "开始读取...\n";
                    richTextBox2.AppendText("写入成功！");
                }

            }
        }
        //2进制 模块

        private void btnWrite3_Click(object sender, EventArgs e)
        {
            if (richTextBox3.Text == string.Empty)
            {
                MessageBox.Show("请输入你要写入的内容！");
                return;
            }
            else
            {
                saveFileDialog1.Filter = "二进制(*.bin)|*.bin";
                if (saveFileDialog1.ShowDialog() == DialogResult.OK)
                {
                    using (FileStream filestream = new FileStream(saveFileDialog1.FileName, FileMode.OpenOrCreate, FileAccess.ReadWrite))
                    {

                        using (BinaryWriter binWrite = new BinaryWriter(filestream))
                        {
                            binWrite.Write(richTextBox3.Text);
                            richTextBox3.AppendText("写入成功！");

                        }

                    }
                }
            }
        }

        private void btnRead3_Click(object sender, EventArgs e)
        {
            richTextBox3.Clear();
            openFileDialog1.Filter = "二进制(*.bin|*.bin|All(*.*)|*.*)";
            if (openFileDialog1.ShowDialog() == DialogResult.OK)
            {
                using (FileStream filestream=new FileStream(openFileDialog1.FileName,FileMode.Open,FileAccess.Read))
                { 
                    using(BinaryReader binRead=new BinaryReader(filestream))
                    {
                        if (binRead.PeekChar() != -1)
                        {
                            richTextBox3.Text = binRead.ReadString();
                        }
                    }
                }
            }


        }

    }
}