Compares the values of two byte arrays, and returns true only if every array member is identical : Byte Array « File Stream « C# / C Sharp






  1. C# / C Sharp
  2. File Stream
  3. Byte Array

Compares the values of two byte arrays, and returns true only if every array member is identical

       
//-----------------------------------------------------------------------
// <copyright file="Utility.cs" company="ParanoidMike">
//     Copyright (c) ParanoidMike. All rights reserved.
// </copyright>
//-----------------------------------------------------------------------

namespace ParanoidMike
{
    using System;
    using System.Diagnostics;
    using System.IO;
    using System.Runtime.Serialization.Formatters.Binary;
    using Microsoft.Win32;

    /// <summary>
    /// Reusable functions for many uses.
    /// </summary>
    public static class Utility
    {

        /// <summary>
        /// Compares the values of two byte arrays, and returns true only if every array member is identical
        /// </summary>
        /// <param name="firstArray">
        /// First array to be compared.
        /// </param>
        /// <param name="secondArray">
        /// Second array to be compared.
        /// </param>
        /// <returns>
        /// True if first array is identical to second array.
        /// False if the arrays are not identical.
        /// </returns>
        public static bool DoByteArraysMatch(
            byte[] firstArray, 
            byte[] secondArray)
        {
            // Check to be sure they two arrays match in length before doing anything else; if not, then they cannot possibly match
            int upperBound = firstArray.GetUpperBound(0);

            try
            {
                if (upperBound != secondArray.GetUpperBound(0))
                {
                    // Caller must've screwed something up, as this function is only intended to compare arrays with the same number of elements
                    throw (new NotSupportedException("EFSConfiguration.EFSConfiguration.MismatchInSize"));
                }
            }
            catch (NullReferenceException)
            {
                // One of the arrays is null
                throw;
            }

            // Perform comparison of each byte[i] array value; if any comparison fails, the arrays must be unequal
            for (int i = 0; i < upperBound; i++)
            {
                if (firstArray[i] != secondArray[i])
                {
                    ////Console.WriteLine("Array contents are dissimilar: element " + i.ToString + " is equal to \"" + firstArray[i].ToString + "\" in ");
                    ////Console.WriteLine("the first array and \"" + secondArray[i].ToString + "\" in the second array.", Environment.NewLine);

                    return false;
                }
            }

            // If function has made it this far, then the byte arrays are (almost) certainly identical
            return true;
        }
    }
}








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