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You need to assign the image list to the viewlist after you are done adding to _imgList. For Each dirFile As String In dirFiles Dim imgFilename As String = IO.Path.GetFileNameWithoutExtension(dirFile) Dim img As New System.Drawing.Bitmap(dirFile) Dim imgImage As Image = Image.FromFile(dirFile) _imgList.ImageSize = imgSize _imgList.Images.Add(img.Clone) ListView1.Items.Add(imgFilename, count) count += 1 …

At the end of the subs you are overriding the conditional test. The buttons are going to be yellow no matter what. **Not even sure this is what you are trying to solve as there is no info about the problem!**