Download, Upload and sownload .zip file

Question

Hello dear
I am a new software developer . i develop website in asp.net.
I am in problems to upload and download and show link of .zip file.
mu truwl below

this is my .zip file. it loaded in a folder in website

22 example: MyPo.zip

I wantshow it in MyPo.zip . when click this link its downloaded in computer.

if any body help me best regurds.