public static BitmapImage IconoExtension(string extension) { if (!(extension is null)) { if (extension.Equals(".pdf")) { return(new BitmapImage(new Uri("/Images/icons/icons8-pdf2.png", UriKind.Relative))); } else if (Documentos.Contains(extension)) { return(new BitmapImage(new Uri("/Images/icons/icons8-textdocument2.png", UriKind.Relative))); } else if (Imagenes.Contains(extension)) { return(new BitmapImage(new Uri("/Images/icons/icons8-images.png", UriKind.Relative))); } else { return(new BitmapImage(new Uri("/Images/icons/icons8-music.png", UriKind.Relative))); } }