private void ResetImageList()
{
MainTreeViewImageList.Images.Clear();
MainTreeViewImageList.Images.Add(Image.FromFile(Path.Combine(ExecFolder, "TPFTools.ico")));
MainTreeViewImageList.Images.Add(Image.FromFile(Path.Combine(ExecFolder, "TextDoc.jpg")));
MainTreeViewImageList.Images.Add(Image.FromFile(Path.Combine(ExecFolder, "Placeholder.ico")));
}