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File Magic Numbers

Magic numbers are the first bits of a file which uniquely identify the type of file. This makes programming easier because complicated file structures need not be searched in order to identify the file type.

For example, a jpeg file starts with ffd8 ffe0 0010 4a46 4946 0001 0101 0047 ......JFIF.....G ffd8 shows that it's a JPEG file, and ffe0 identify a JFIF type structure. There is an ascii encoding of "JFIF" which comes after a length code, but that is not necessary in order to identify the file. The first 4 bytes do that uniquely.

This gives an ongoing list of file-type magic numbers.

Image Files

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using System;
using System.Net;
using System.Net.Sockets;
 
namespace BrunoGarcia.Net
{
    public class TcpForwarderSlim
    {
        private readonly Socket _mainSocket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
 

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using System.Security.Cryptography.X509Certificates;
using System.Security.Cryptography;


        var abyPublicKey = AssemblyUtility.GetEmbeddedFileAsByteArray("WebServer.SslCertificate.cer");
        var abyPrivateKey = AssemblyUtility.GetEmbeddedFileAsByteArray("WebServer.SslCertificate.pvk");
        var certificate = new X509Certificate2(abyPublicKey, string.Empty, 
            X509KeyStorageFlags.MachineKeySet | X509KeyStorageFlags.PersistKeySet | X509KeyStorageFlags.Exportable);
        var cspParams = new CspParameters
        {

ZakFong

using Dapper;
using Oracle.ManagedDataAccess.Client;
using System;
using System.Collections.Generic;
using System.Data;
using System.Linq;

public class OracleDynamicParameters : Dapper.SqlMapper.IDynamicParameters {
	private static Dictionary<SqlMapper.Identity, Action<IDbCommand, object>> paramReaderCache = new Dictionary<SqlMapper.Identity, Action<IDbCommand, object>>( );