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POMultiple image thumbnail viewer
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copied!<p>I am trying to create a simple winform application in c# that can load multiple images from a file dialog into the application screen. I am using ListView control to contain those images as picture box control wasn't going to serve my needs as I want to be able to select loaded thumbnails and do many other things based on the selection.</p> <p>The problem I am having is to do with <strong>thumbnail image quality.</strong> Once they get loaded in the application window panel, the image quality is very poor. I want them to look just like how Windows operating system displays preview/thumbnails of images in large icon with a decent image quality.</p> <p>I've tried adding this <code>listView1.LargeImageList.ColorDepth = ColorDepth.Depth32Bit;</code> as suggested by other people but it won't even let the app load images.</p> <p>Here is the code done so far.</p> <pre><code>using (OpenFileDialog open = new OpenFileDialog()) { open.Title = "Open Image"; open.Filter = "JPEG Files (*.jpg)|*.jpg;*.jpeg|All Files (*.*)|*.*"; open.Multiselect = true; if (open.ShowDialog() == DialogResult.OK) { ImageList picList = new ImageList(); listView1.View = View.LargeIcon; picList.ImageSize = new Size(200, 130); foreach (String file in open.FileNames) { Image i = Image.FromFile(file); Image pic = i.GetThumbnailImage(200, 130, null, new IntPtr()); picList.Images.Add(pic); } listView1.LargeImageList = picList; listView1.LargeImageList.ColorDepth = ColorDepth.Depth32Bit; for (int i = 0; i < picList.Images.Count; i++) { ListViewItem item = new ListViewItem(); item.ImageIndex = i; listView1.Items.Add(item); } } </code></pre> <p>Does anyone have a suggestion as to what I should do to make it just as good as Windows' default thumbnail viewer? </p>

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