private void UpdateTitle()
{
Assembly asm = Assembly.GetExecutingAssembly();
FileVersionInfo fvi = FileVersionInfo.GetVersionInfo(asm.Location);
WindowTitle = string.Format("TEdit v{0}.{1}.{2}.{3} {4}",
fvi.ProductMajorPart, fvi.ProductMinorPart, fvi.FileBuildPart, fvi.FilePrivatePart,
Path.GetFileName(_currentFile));
}