C#

public partial class ArtLabel : Form
   {
       private System.Windows.Forms.PictureBox[] imgArray; //Declaring array of PictureBox
       public static string ImageToShow;
       private int NumOfFiles;
       private string[] imgExtension;


       public ArtLabel()
       {
           InitializeComponent();
           panel1.VerticalScroll.Visible = true;
           panel1.VerticalScroll.Enabled = true;
         //  panel1.VerticalScroll.Maximum = 1000;
           panel1.VerticalScroll.Value = panel1.VerticalScroll.Maximum;

       }

       private void ArtLabel_Load(object sender, EventArgs e)
       {
          GetPicture4(@"D:\\Music\\");
       }

       private bool ThumbnailCallback()
       {
           return false;
       }

       private void ARR(int cNumber, string exc)
       {
        int Xpos = 8;
           int Ypos = 8;
           Image img;
           Image.GetThumbnailImageAbort myCallback =
           new Image.GetThumbnailImageAbort(ThumbnailCallback);
           imgArray = new System.Windows.Forms.PictureBox[cNumber]; // assign number array
           for (int i = 0; i < cNumber; i++)
           {
               imgArray[i] = new System.Windows.Forms.PictureBox(); // Initialize one variable
              if (Xpos > 432) // six images in a line
               {
                   Xpos = 8; // leave eight pixels at Left
                   Ypos = Ypos + 72;  // height of image + 8
               }

                       imgArray[i].Left = Xpos;
                       imgArray[i].Top = Ypos;
                       imgArray[i].Width = 64;
                       imgArray[i].Height = 64;
                       imgArray[i].Visible = true;
                       imgArray[i].SizeMode = PictureBoxSizeMode.StretchImage;
                       img = Image.FromFile(exc);
                       imgArray[i].Tag = exc;
                       imgArray[i].Click += new System.EventHandler(ClickImage);
                       imgArray[i].Image = img.GetThumbnailImage(64, 64, myCallback, IntPtr.Zero);
                       panel1.Controls.Add(imgArray[i]);
                       Application.DoEvents();
                       Xpos = Xpos + 72;

           }

       }

       private List<string> GetPicture4(string Folder)
       {
           DirectoryInfo dir = new DirectoryInfo(Folder);
           List<string> str = new List<string>();
           FileInfo[] files = dir.GetFiles("*.jpg", SearchOption.AllDirectories);
           int NumOfFiles = files.Length;
           imgExtension = new string[NumOfFiles];

           for (int i = 0; i < NumOfFiles; i++)
           {
               ARR(i, files[i].FullName);
               str.Add(files[i].FullName);
           }

           return str;


       }

       // The Event to click the image
       private void ClickImage(Object sender, System.EventArgs e)
       {
           ImageToShow = ((System.Windows.Forms.PictureBox)sender).Tag.ToString();
           Direcoty_Prova.ViewPicture f = new Direcoty_Prova.ViewPicture();
           f.ShowDialog();
       }


   }