VB.NET How to get integer from Request -

i want integer url querystring, want protect against strings being entered. example;

http://mydomain.com/index.aspx?page=1  dim ipageid integer = request("page") 

i want '1' , save integer variable, page errors out if enter below address;

http://mydomain.com/index.aspx?page=string 

i've tried using cint , ctype, brings 'string cannot converted integer' issue. i'm sure there's simple can do, i've been banging head against wall hour , want small thing sorted.

use request.querystring , int32.parse convert string "1" integer 1.

dim ipageid integer = int32.parse(request.querystring("page")) 

if ant ensure querystring valid use int32.tryparse:

dim ipageid integer if int32.tryparse(request.querystring("page"), ipageid)      ' valid, ... else      ' invalid end if