\documentclass[12pt]{article}
\usepackage{pstricks}
\pagestyle{empty}
\setlength\parindent{0pt}
\begin{document}

\begin{tabular}{p{3cm}|c|l}
\texttt{p}--Spalte & \texttt{c}--Spalte & \texttt{l}--Spalte\\\hline
 \makeatletter\@minipagetrue\makeatother
\begin{enumerate}
   \item Item 1
   \item Item 2
   \item Item 3
\end{enumerate} 
    
  \texttt{enumerate}  &
  \begin{pspicture}[shift=-2.1](1,2.5)(4,5)
    \psline{<->}(1,2.5)(4,5)
    \psline{<->}(4,2.5)(1,5)
  \end{pspicture} &
  \begin{minipage}[t]{3cm}
    \raggedright
    \begin{itemize}
       \item Item 1
       \item Item 2
    \end{itemize}

  \texttt{itemize}
\end{minipage}
\end{tabular}

\end{document}
