c# - Change Background image every visit -


i have 50 background images site. looking randomly present user different 1 every visit. mean surf through site same background image during visit.

after close browser , re-visit or come , visit later, presented new random background image. don't need save on previous background image was, random new 1 each new visit site.

not sure can done c#, javascript, jquery or css.

edit: using asp.net 4.0 c# web app. thanks

keep in session. pick @ random when it's not in session, stay same long they're @ site -- , next time come back, they'll new one.

for example (my c# little rusty):

public getbackground (httpsessionstate session) {     string bg = (string) session["session.randombg"];     if (bg == null) {         // pick random bg & store  it.         bg = "pick one";         session["session.randombg"] = bg;     }     return bg; }

hope helps!


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