how to draw vertical rule in asp.net in a page

Question

, iam using asp.net with c#
i have images in  left ,right,bottom of the page  so i want to draw border like this , in vertical and horizontal , can you give example which helps me
 
images   ||                                                                         ||    images
              ||                                                                          ||
images   ||                                                                          ||      images
               ||                                                                         ||
images    ||   ============================== ==    images
 
images           images             images            images           images