Loading multiple images in to listbox in wpf

//Load BMP images from a pre-defined location
private void LoadImages()
{
//start clean
listView1.Clear();
listView1.Refresh();
imageList1.Images.Clear();

//setup the list
imageList1.ImageSize = new Size(50, 50);
imageList1.ColorDepth = ColorDepth.Depth32Bit;
imageList1.TransparentColor = Color.White;

//get the location
string[] images = Directory.GetFiles(_path, "*" + _imageFileExtension);

//load the list image list
foreach (string img in images)
{
System.Drawing.Image img1 = System.Drawing.Image.FromFile(img);
imageList1.Images.Add(GetThumbnaiImage(imageList1.ImageSize.Width, img1));
}

//populate the list view
int j = 0;
foreach (string img in images)
{
FileInfo fi = new FileInfo(img);
this.listView1.Items.Add(fi.Name);
this.listView1.Items[j].ImageIndex = j;
j++;
}

//display the list
this.listView1.View = View.LargeIcon;
this.listView1.LargeImageList = imageList1;
}