Question

In my base page I need to remove an item from the query string and redirect. I can’t use

Request.QueryString.Remove('foo') 

because the collection is read-only. Is there any way to get the query string (except for that one item) without iterating through the collection and re-building it?

Answer 1

You’d have to reconstruct the url and then redirect. Something like this:

string url = Request.RawUrl;  NameValueCollection params = Request.QueryString; for (int i=0; i<params.Count; i++) {     if (params[i].GetKey(i).ToLower() == 'foo')     {         url += string.Concat((i==0 ? '?' : '&'), params[i].GetKey(i), '=', params.Get(i));     } } Response.Redirect(url); 

Anyway, I didn’t test that or anything, but it should work (or at least get you in thye right direction)