Is there a way to have "Figure 1" INSTEAD of just "1" in List of Figures WITHOUT messing up the existing document?

Question

I have the following situation: In my document the caption of a figure appears normal like "Figure 1: example". BUT in the List of Figures the caption appears like "1 example". Is there a way to have "Figure 1 example" in List of Figures too?

I am using XeLaTeX as a compiler and the code is the following:

\documentclass[twoside, a4paper, 11pt]{article}
\usepackage{caption}
\captionsetup[figure]{name=Figure}
\usepackage{subcaption}
\usepackage{float}
\usepackage{chngcntr}
\counterwithin{figure}{section}
\usepackage{graphicx}
\graphicspath{ {./Images/} }
\begin{document}
\tableofcontents
\renewcommand{\listfigurename}{List of Figures}
\addcontentsline{toc}{subsection}{List of Figures} %Πρόσθεση στα περιεχόμενα (table of contents)
\listoffigures
\begin{figure}[htb]
\centering
\includegraphics[width=1\textwidth]{example.png}
\caption[Example for List of Figures]{Different example for caption under the figure.}
  \label{Fig:exmpl}
\end{figure}
\end{document}

I found out that I can use this code:

\usepackage[titles]{tocloft}
\newlength{\mylen}
\renewcommand{\cftfigpresnum}{\figurename\enspace}
\renewcommand{\cftfigaftersnum}{:}
\settowidth{\mylen}{\cftfigpresnum\cftfigaftersnum}
\addtolength{\cftfignumwidth}{\mylen}

BUT this messed up seriously the structrure of my document. Do I have to change something to my code or only add the above? I did not understand clearly. It really messed up my document...It messes my document to this:

From this:

Answer 1

You can use package tocbasic for the list of figures:

\documentclass[twoside, a4paper, 11pt]{article}
\usepackage{caption}
\captionsetup[figure]{name=Figure}% IMHO not needed.
\usepackage{subcaption}% Not used in the example.
\usepackage{float}% Not used in the example.
\usepackage{chngcntr}% Note: Not needed with LaTeX versions of the last 5 years!
\counterwithin{figure}{section}
\usepackage{graphicx}
\graphicspath{ {./Images/} }% Not used in the example.
\usepackage{tocbasic}
\setuptoc{lof}{totoc}% add an ToC entry for the LoF
\renewcommand{\listoffigures}{\listoftoc[List of Figures]{lof}}% redefine \listoffigures to use tocbasic
\DeclareTOCStyleEntry[% reconfigure the figure entries
  dynnumwidth,% automatic adapt the width reserved for the number (needs at
              % least 3 LaTeX runs!)
%  indent=0pt, % optional to remove the indent of the entries
  entrynumberformat=\figurenumberformat,% to change the number formatting
]{tocline}{figure}
\newcommand{\figurenumberformat}[1]{Figure\enspace\ignorespaces #1\unskip:\hfil}
\begin{document}
\tableofcontents
\listoffigures
\begin{figure}[htb]
\centering
\includegraphics[width=1\textwidth]{example-image}
\caption[Example for List of Figures]{Different example for caption under the figure.}
  \label{Fig:exmpl}
\end{figure}
\end{document}

After at least three LaTeX runs you get:

See section “Configuring Content-List Entries” in chapter “Managing Content Lists with tocbasic” of the English KOMA-Script manual for more information.

Note: Using the tocbasic command \setuptoc{lof}{totoc} to add an entry for the List of Figures (lof) to the Table of Contents also solves the problem, that in your original example a page break can happen between adding that entry using \addcontentsline and printing the List of Figures using \listoffigures, which would result in a wrong number for this entry in the Table of Contents.

Answer 2

The least intrusive method is to locally redefine \numberline for the list of figures. \numberlineis used to print the number.

\documentclass[twoside, a4paper, 11pt]{article}
\usepackage{caption}
\captionsetup[figure]{name=Figure}
\usepackage{subcaption}
\usepackage{float}
\usepackage{chngcntr}
\counterwithin{figure}{section}
\usepackage{graphicx}
%\graphicspath{ {./Images/} }
\makeatletter
\def\fignumline#1{\figurename~\hb@xt@@tempdima{#1\hfil}}% see \numberline
\makeatother
\begin{document}
\tableofcontents
\bgroup% local redefinitions
  \renewcommand{\listfigurename}{List of Figures%
    \addcontentsline{toc}{subsection}{List of Figures}}%
  \let\numberline=\fignumline
  \listoffigures
\egroup
\begin{figure}[htb]
\centering
\includegraphics[width=1\textwidth]{example-image}
\caption[Example for List of Figures]{Different example for caption under the figure.}
  \label{Fig:exmpl}
\end{figure}
\end{document}