Create index of title in a text box

Question

I am using text boxes into a document and each of them has a title with an increasing counter. I would like to create an index of the text boxes including therefore title, number and page.

An example of the code I use is the following:

    \begin{center}
    \fbox{
        \begin{minipage}[c]{0.85\textwidth}
            \textbf{\DoanString{TITLE OF BOX WITH NUMBER }:\\
                detailed title of box}
            \begin{itemize}
                \item text 1
                \item text 2
                \item text 3
            \end{itemize}
        \end{minipage}
    }
\end{center}