SNAPSHOT DISQUE DUR

    public struct OneFile
    {
        public String size;
        public String lastDate;
    }
    
    ///<summary>This class is used for hard drive methods</summary>
    ///<remarks> 
    ///Contains method for hard drive snapshot, comparing hard drive snapshot and incrementing the number of scaned files
    ///</remarks> 
    class DriveAccess
    {
        /// <summary>
        /// StringCollection containing the scaned folder paths
        /// </summary>
        //private static String[,] _allFiles;
        Dictionary<String, OneFile> _allFiles;

        public Dictionary<String, OneFile> allFiles
        {
            get { return _allFiles; }
            set { _allFiles = value; }
        }
        
        /// <summary>
        /// Construct, instanciates the StringCollection
        /// </summary>
        public DriveAccess() 
        {
            //allFiles = new String[50000,3];
            _allFiles = new Dictionary<String, OneFile>();
        }

        /// <summary>
        /// Methods which gets all files and folders in a directory. It uses a Stack which is the best way to
        /// deal with non recursive algorithm for scan.
        /// </summary>
        /// <param name="inDirectory">The directory we want to scan</param>
        public void GetAllFiles(String inDirectory)
        {
            // Define new stack
            Stack<String> myStack = new Stack<String>();

            // Get all subdirectories in inDirectory
            String[] files = Directory.GetFileSystemEntries(inDirectory);

            // Define String containing the poped value from stack
            String poped;

            // We push all subdirectories in the stack
            foreach (String fileName in files)
            {
                myStack.Push(fileName);
            }

            int i = 0;

            // Let's do the main loop
            while (myStack.Count > 0)
            {
                // Pop a value
                poped = myStack.Pop();

                // If it is a directory
                if (Directory.Exists(poped))
                {
                    try
                    {
                        // Get it's subdirectories
                        files = Directory.GetFileSystemEntries(poped);

                        // Push these subdirectories
                        foreach (String fileName in files)
                        {
                            myStack.Push(fileName);
                        }
                    }
                    catch
                    { }
                }
                // We got a file
                else
                {
                    // Get informations about the file
                    FileInfo myFileInfo = new FileInfo(poped);
                    
                    // Add it to the StringCollection attribute
                    //allFiles[i, 0] = poped;
                    //allFiles[i, 1] = myFileInfo.Length.ToString();
                    //allFiles[i, 2] = myFileInfo.LastWriteTime.ToString();
                    //i++;
                    OneFile myOneFile;
                    myOneFile.size = myFileInfo.Length.ToString();
                    myOneFile.lastDate = myFileInfo.LastWriteTime.ToString();

                    _allFiles[poped] = myOneFile;

                    // Number of scaned files and directories ++
                    incNum();
                }
            } 
        }

        

        /// <summary>
        /// Compares two StringCollections and returns the differences between these StringCollections
        /// </summary>
        /// <param name="inStringCollec">One of the StringCollection we want to compare</param>
        /// <returns>Differences between the two StringCollections</returns>
        public Dictionary<String, OneFile> compare(Dictionary<String, OneFile> inStringCollec)
        {
            // Define the StringCollection we will return
            Dictionary<String, OneFile> returnCollection = new Dictionary<String, OneFile>();
            OneFile myTempOneFile;

            // Foreach String into one of the String[,]
            foreach(KeyValuePair<String, OneFile> myPair in _allFiles)
            {
                if (inStringCollec.ContainsKey(myPair.Key))
                {
                    if (inStringCollec[myPair.Key].lastDate != myPair.Value.lastDate)
                    {
                        myTempOneFile.lastDate = "<span style=\"color:red;\">" + _allFiles[myPair.Key].lastDate + "</span>";
                        myTempOneFile.size = _allFiles[myPair.Key].size;
                        returnCollection[myPair.Key] = myTempOneFile;
                    }

                    if (inStringCollec[myPair.Key].size != myPair.Value.size)
                    {
                        myTempOneFile.lastDate = _allFiles[myPair.Key].lastDate;
                        myTempOneFile.size = "<span style=\"color:red;\">" + _allFiles[myPair.Key].size + "</span>";
                        returnCollection[myPair.Key] = myTempOneFile;
                    }
                }
                else
                {
                    myTempOneFile.lastDate = _allFiles[myPair.Key].lastDate;
                    myTempOneFile.size = _allFiles[myPair.Key].size;
                    returnCollection["<span style=\"color:red;\">" + myPair.Key + "</span>"] = myTempOneFile;
                }
            }
            return returnCollection;
        }
    }