Click here to Skip to main content
11,631,992 members (73,512 online)
Click here to Skip to main content

Tagged as

Removing (Deleting) Querystring in ASP.NET

, 7 Apr 2011 CPOL 45.4K 10
Rate this:
Please Sign up or sign in to vote.
Removing (Deleting) Querystring in ASP.NET

We cannot delete a query string directly like below:

Request.QueryString.Remove("foo")

If you do this, you will get an error - collection is read-only. So, we need to write the below code before deleting the query string.

In C#:

PropertyInfo isreadonly = 
  typeof(System.Collections.Specialized.NameValueCollection).GetProperty(
  "IsReadOnly", BindingFlags.Instance | BindingFlags.NonPublic);
// make collection editable
isreadonly.SetValue(this.Request.QueryString, false, null);
// remove
this.Request.QueryString.Remove("foo");

In VB.NET:

Dim isreadonly As PropertyInfo = _
  GetType(System.Collections.Specialized.NameValueCollection).GetProperty(_
  "IsReadOnly", BindingFlags.Instance Or BindingFlags.NonPublic)
 
' make collection editable
isreadonly.SetValue(Me.Request.QueryString, False, Nothing)
 
' remove
Me.Request.QueryString.Remove("foo")
I hope that this will help you guys.

License

This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Share

About the Author

Toniyo Jackson
Software Developer
India India
No Biography provided

You may also be interested in...

Comments and Discussions

 
GeneralRe: Thanks for waiting. Let me tell this once again - Changing ... Pin
Ankur\m/11-Apr-11 21:06
memberAnkur\m/11-Apr-11 21:06 
GeneralRe: That'll be great, thanks, when you have time. I'd like to se... Pin
Jeff Bowman11-Apr-11 20:05
memberJeff Bowman11-Apr-11 20:05 
GeneralRe: No I do not, but if you need I can write it for you. It is j... Pin
Ankur\m/11-Apr-11 18:19
memberAnkur\m/11-Apr-11 18:19 
GeneralRe: :thumbsup: Thank you. :) Pin
Toniyo Jackson8-Apr-11 0:29
memberToniyo Jackson8-Apr-11 0:29 
GeneralRe: That's the spirit! :thumbsup: Cheers! Pin
Ankur\m/8-Apr-11 0:27
memberAnkur\m/8-Apr-11 0:27 
GeneralRe: Anyway, my first Tip/Trick got failure. Will do best next ti... Pin
Toniyo Jackson8-Apr-11 0:16
memberToniyo Jackson8-Apr-11 0:16 
GeneralRe: No problem Ankur. You are correct. One day i was trying to d... Pin
Toniyo Jackson8-Apr-11 0:10
memberToniyo Jackson8-Apr-11 0:10 
GeneralRe: As I said, it is kept readonly for a reason, do not change t... Pin
Ankur\m/8-Apr-11 0:00
memberAnkur\m/8-Apr-11 0:00 
GeneralReason for my vote of 5 very good.. I was looking for this s... Pin
mvamsianil4-Aug-11 23:04
membermvamsianil4-Aug-11 23:04 
GeneralRe: Thanks :) Pin
Toniyo Jackson4-Aug-11 23:30
memberToniyo Jackson4-Aug-11 23:30 
GeneralNo problem Ankur. You are correct. One day i was trying to d... Pin
Toniyo Jackson8-Apr-11 0:09
memberToniyo Jackson8-Apr-11 0:09 
GeneralWhy would anyone do this? If something is made Readonly, it'... Pin
Ankur\m/7-Apr-11 23:49
memberAnkur\m/7-Apr-11 23:49 
GeneralRe: Still, its not bad to know how to delete querystring yes? :) Pin
Toniyo Jackson7-Apr-11 23:53
memberToniyo Jackson7-Apr-11 23:53 
GeneralRe: Hi Ankur, do you have a small snippet handy? Thanks. Pin
Jeff Bowman11-Apr-11 15:00
memberJeff Bowman11-Apr-11 15:00 
GeneralI don't see any value in this Tip/Trick. I have read the rep... Pin
Venkatesh Mookkan7-Apr-11 6:57
memberVenkatesh Mookkan7-Apr-11 6:57 
GeneralRe: No problem Venky. I thought it will useful for somebody. My... Pin
Toniyo Jackson8-Apr-11 0:15
memberToniyo Jackson8-Apr-11 0:15 

General General    News News    Suggestion Suggestion    Question Question    Bug Bug    Answer Answer    Joke Joke    Rant Rant    Admin Admin   

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.

| Advertise | Privacy | Terms of Use | Mobile
Web01 | 2.8.150728.1 | Last Updated 7 Apr 2011
Article Copyright 2011 by Toniyo Jackson
Everything else Copyright © CodeProject, 1999-2015
Layout: fixed | fluid