How to get the most recent file using a batch file?

Question

I have a list of zip files with date and time appended like yyyymmdd_hhmmss_Demos.zip. Now how to get the most recently added zip file in the source dir. I need

Answer 1

pushd \\ryap\CONTROL_DATOS
for /f "tokens=*" %%a in ('dir \\ryap\CONTROL_DATOS /b /od') do set newest=%%a
Xcopy/Y "\\ryap\CONTROL_DATOS\%newest%" "D:\TXT_SOURCES\"
popd