C#

private void import(object sender, EventArgs e)
        {
                ImageList imageList = new ImageList();
                imageList.ImageSize = new Size(100, 80);
                imageList.ColorDepth = ColorDepth.Depth32Bit;

                int i = 0;
                string[] files = dlg.FileNames;
                string[] pathes = new string[files.Length];

                foreach (string file in files)
                {
                    pathes[i] = file;
                    i++;
                }
                foreach (string path in pathes)
                {
                    //Image img1 = Image.FromFile(path);
                    //imageList.Images.Add(getThumbnaiImage(imageList.ImageSize.Width, img1));            
                    FileInfo fileInfo = new FileInfo(path);
                    String strDir = fileInfo.Name;
                    listView1.Items.Add(strDir);
                    imageList.Images.Add(Bitmap.FromFile(path));
                    //listView1.TileSize = new System.Drawing.Size(100, 80);
                }
                for (int j = 0; j < pathes.Length; j++)
                {
                    this.listView1.Items[j].ImageIndex = j;
                }
                this.listView1.View = View.LargeIcon;
                this.listView1.LargeImageList = imageList;

            }

private DataSet ReadXLS(string FileName)
{
 DataSet ds = new DataSet();
 OleDbDataAdapter adapter;
 string connectionString = @"provider=Microsoft.Jet.OLEDB.4.0;data source="
  + FileName + ";Extended Properties=\"Excel 8.0;Imex=1\"";
 OleDbConnection conn = new OleDbConnection(connectionString);
 try
 {
  adapter = new OleDbDataAdapter("SELECT * FROM [Sheet1$]", conn);
  adapter.Fill(ds, strSheet);
 }
 catch
 {
  //
 }
 finally
 {
  if (conn.State == ConnectionState.Open) conn.Close();   }
 return ds;
}