using pgfplotsinvokeforeach with addplot table

Question

I have this minimal file:

\documentclass[]{scrartcl}
\usepackage{filecontents}
\usepackage{pgfplots}
\pgfplotstableset{
  header=true,
  trim cells=true,
  col sep=comma,
}
\begin{document}
\begin{filecontents}{a.dat}
x,y
1,2
2,4
3,6
\end{filecontents}
\begin{filecontents}{b.dat}
x,y
1,3
2,6
3,9
\end{filecontents}
\pgfplotstableread{a.dat}{\DataA}
\pgfplotstableread{b.dat}{\DataB}
\begin{tikzpicture}
  \begin{axis}
    \addplot table[x=x,y=y]\DataA;\label{plt:dataA}
    \addplot table[x=x,y=y]\DataB;\label{plt:dataB}
  \end{axis}
\end{tikzpicture}
\end{document}

the actual file has many more input files, but for each I have one line with \addplot. Now I thought, instead of having many lines of \addplot I could use \pgfplotsinvokeforeach to call it.

something like this:

...
\pgfplotsinvokeforeach{A,B}{
  \addplot table[x=x,y=y]\Data#1;\label{plt:data#1}
}
...

the label part works as expected, and the \Data#1 part does not (also as expected). I tried some combinations of \csname and \endcsname but had no success.

how can I use this loop structure to add multiple plots from multiple tables?

Answer 1

thanks to @esdd,

his answer in the comments to this question works for this mwe. One can simply use

\pgfplotsinvokeforeach{a,b}{\addplot table[x=x,y=y]{#1.dat};\label{plt:data:#1}}

The filename directly.