(2010-08-11) C#.NET System.IO

概述摘要:(2010-08-06) C#.NET System.IO 范列1.读取图档后存档 程序　 using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Linq;using Sy

摘要:(2010-08-06) C#.NET System.IO

范列1.读取图档后存档

程序　

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;namespace winmod05{    public partial class Form1 : Form    {        public Form1()        {            InitializeComponent();        }        private voID button1_Click(object sender,EventArgs e)        {            //呈现对话盒            if (this.openfileDialog1.ShowDialog() == DialogResult.OK)            {                //文件名称                //MessageBox.Show(this.openfileDialog1.filename);                //1.建立串流                System.IO.Stream fs1 = new System.IO.fileStream(this.openfileDialog1.filename,System.IO.fileMode.Open,System.IO.fileAccess.Read);                //准备缓冲区 Byte数组                 Byte[] buff = new Byte[fs1.Length];                //开始读取 读到缓冲区去                fs1.Read(buff,(Int32)fs1.Length);                //建立Gap(内存串流)                System.IO.MemoryStream ms = new System.IO.MemoryStream();                ms.Write(buff,(Int32)fs1.Length);                //建构Image对象                System.Drawing.Image img = new System.Drawing.Bitmap(ms);                //设定PictureBox                this.pictureBox1.Image = img;                //写出图片到另一个地方                 //建立串流                 String newfile=System.IO.Path.GetfilenameWithoutExtension(this.openfileDialog1.filename)+"_new.jpg";                //MessageBox.Show(newfile);                System.IO.Stream fout =                     new System.IO.fileStream(@"c:images" + newfile,System.IO.fileMode.Create,System.IO.fileAccess.Write);                //写出去                fout.Write(buff,(Int32)fs1.Length);                //清缓冲区                fout.Flush();                fout.Close();                //关闭串流                fs1.Close();            }        }    }}

范列2.笔记本 读档与写档

程序

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;namespace winmod05{    public partial class NotePad : Form    {        public NotePad()        {            InitializeComponent();        }        private voID button1_Click(object sender,EventArgs e)        {            //启动对话盒            if (this.openfileDialog1.ShowDialog() == DialogResult.OK)            {                //处理                //1.建立串流                 System.IO.Stream fs1 = new System.IO.fileStream(this.openfileDialog1.filename,System.IO.fileAccess.Read);                //2.接上读取器                System.IO.TextReader reader = new System.IO.StreamReader(fs1,System.Text.EnCoding.UTF8);                String text = reader.ReadToEnd();                this.textBox1.Text = text;                fs1.Close();            }        }        private voID button2_Click(object sender,EventArgs e)        {            //            if (this.savefileDialog1.ShowDialog() == DialogResult.OK)            {                //保存                //1.建立串流                System.IO.Stream fs1 = new System.IO.fileStream(this.savefileDialog1.filename,System.IO.fileAccess.Write);                //2.建立Writer                System.IO.StreamWriter writer = new System.IO.StreamWriter(fs1,System.Text.EnCoding.UTF8);                writer.Write(this.textBox1.Text);                writer.Flush();                writer.Close();                fs1.Close();                           }        }    }}

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原文:大专栏  (2010-08-11) C#.NET System.IO

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