How can I remove item from querystring in asp.net using c#?

Question

I want remove "Language" querystring from my url. How can I do this? (using Asp.net 3.5 , c#)

Default.aspx?Agent=10&Language=2 

I want to remove "Language=2", but language would be the first,middle or last. So I will have this

Default.aspx?Agent=20 

Answer 1

If it's the HttpRequest.QueryString then you can copy the collection into a writable collection and have your way with it.

NameValueCollection filtered = new NameValueCollection(request.QueryString); filtered.Remove("Language"); 

Answer 2

Here is a simple way. Reflector is not needed.

    public static string GetQueryStringWithOutParameter(string parameter)     {         var nameValueCollection = System.Web.HttpUtility.ParseQueryString(HttpContext.Current.Request.QueryString.ToString());         nameValueCollection.Remove(parameter);         string url = HttpContext.Current.Request.Path + "?" + nameValueCollection;          return url;     } 

Here QueryString.ToString() is required because Request.QueryString collection is read only.