simplified if else

Question

if (File.Exists(file.csv))
{
   return file.csv;
}
else if (File.Exists(file.dbf))
{
   return file.dbf;
}

Can I simplify this expression using one line?

Answer 1

If you're willing to accept an InvalidOperationException if no matching file exists:

return new[]{file.csv, file.dbf}.First(File.Exists);

Edit:

If you don't want an exception (you removed that part from your question), use FirstOrDefault() instead and check for null, as Willem Duncan mentioned already in his comment.