ImageList imageList = new ImageList();

OpenFileDialog opend1 = new OpenFileDialog();

opend1.Filter = "Image Files(*.BMP;*.JPG;*.GIF)|*.BMP;*.JPG;*.GIF|All files (*.*)|*.*";

opend1.Multiselect = true;

if (opend1.ShowDialog() == DialogResult.OK)

{

listView1.View = View.LargeIcon;

imageList.ImageSize = new Size(100, 100);

for (int c = 0; c < opend1.FileNames.Length; c++)

{

Image i = Image.FromFile(opend1.FileNames[c].ToString());

Image img = i.GetThumbnailImage(100, 100, null, new IntPtr());

imageList.Images.Add(img);

}

listView1.LargeImageList = imageList;

for (int j = 0; j < imageList.Images.Count; j++)

{

ListViewItem lstItem = new ListViewItem();

lstItem.ImageIndex = j;

listView1.Items.Add(lstItem);

}

}