Use MemoryStream to reverse a file : MemoryStream « File Directory Stream « C# / CSharp Tutorial

Home
C# / CSharp Tutorial
1.Language Basics
2.Data Type
3.Operator
4.Statement
5.String
6.struct
7.Class
8.Operator Overload
9.delegate
10.Attribute
11.Data Structure
12.Assembly
13.Date Time
14.Development
15.File Directory Stream
16.Preprocessing Directives
17.Regular Expression
18.Generic
19.Reflection
20.Thread
21.I18N Internationalization
22.LINQ
23.GUI Windows Forms
24.Windows Presentation Foundation
25.Windows Communication Foundation
26.Workflow
27.2D
28.Design Patterns
29.Windows
30.XML
31.XML LINQ
32.ADO.Net
33.Network
34.Directory Services
35.Security
36.unsafe
C# / CSharp Tutorial » File Directory Stream » MemoryStream 
15.25.5.Use MemoryStream to reverse a file
using System;
using System.IO;

class Class1
{
    [STAThread]
    static void Main(string[] args)
    {
        FileStream fsSrc = File.OpenRead("s.txt");
        BinaryReader rdr = new BinaryReader(fsSrc);

        FileStream fsDest = File.Open("d.txt", FileMode.Create);

        MemoryStream memStream = new MemoryStream();

        int curChar = 0;

        while ((curChar = rdr.Read()) != -1)
        {
            memStream.WriteByte(Convert.ToByte(curChar));
        }

        for (int i = 0; i < memStream.Length / 2; ++i)
        {
            byte tempTop, tempBottom;
            memStream.Seek(i, SeekOrigin.Begin);
            tempTop = (byte)memStream.ReadByte();

            memStream.Seek(-i - 1, SeekOrigin.End);
            tempBottom = (byte)memStream.ReadByte();

            memStream.Seek(-1, SeekOrigin.Current);
            memStream.WriteByte(tempTop);

            memStream.Seek(i, SeekOrigin.Begin);
            memStream.WriteByte(tempBottom);
        }

        memStream.Seek(0, SeekOrigin.Begin);

        byte[] memBytes = memStream.ToArray();

        BinaryWriter bw = new BinaryWriter(fsDest);
        bw.Write(memBytes);

        bw.Close();
        rdr.Close();
    }
}
15.25.MemoryStream
15.25.1.Demonstrate MemoryStream.
15.25.2.MemoryStream: Write bytes and dump to a file
15.25.3.Save the MemoryStream as a file
15.25.4.Read data in FileStream into MemoryStream
15.25.5.Use MemoryStream to reverse a file
java2s.com  | Contact Us | Privacy Policy
Copyright 2009 - 12 Demo Source and Support. All rights reserved.
All other trademarks are property of their respective owners.