BrightIdeasSoftware.ObjectListView.GetActualImageIndex C# (CSharp) Method

        protected virtual int GetActualImageIndex(Object imageSelector)
        {
            if (imageSelector == null)
                return -1;

            if (imageSelector is Int32)
                return (int)imageSelector;

            String imageSelectorAsString = imageSelector as String;
            if (imageSelectorAsString != null && this.SmallImageList != null)
                return this.SmallImageList.Images.IndexOfKey(imageSelectorAsString);

            return -1;
        }