Click here to Skip to main content
Click here to Skip to main content

Tagged as

Remove Request QueryString Key Values for Redirection

, 23 Jun 2010 CPOL
Rate this:
Please Sign up or sign in to vote.
I wanted to make my page behave in two different modes based on the query string. However it was not strait forward. To make it possible I had to manipulate the URL query string to and remove a key and redirecting it back with a freshly creating URL.
Calling Page
bool isKeyFound = false; // Vital to stop calling recursively
string newQueryString = AppHelper.GetNewQueryString (Request.QueryString,"refresh", out isKeyFound);
if (isKeyFound && newQueryString.Length > 0)
    Response.Redirect(Request.Path + "?" +newQueryString);
Called Method
/// <summary>
/// Recreate a new URL by removing
/// </summary>
/// <param name="queryString">Page Requested string </param>
/// <param name="removeKey">The key to be removed</param>
/// <param name="isKeyFound">This will be a additional info returned</param>
/// <returns></returns>
public static string GetNewQueryString(System.Collections.Specialized.NameValueCollection queryString, string removeKey,out bool isKeyFound)
    string returnVal = string.Empty;
    isKeyFound = false ;
    //Build the new query string.
    for (int j = 0; j < queryString.Count; j++)
        // Anything except the target key
        if (!queryString.GetKey(j).ToLower().Equals(removeKey.ToLower()))
            returnVal += queryString.GetKey(j) + "=" + queryString.Get(j) + "&";
            isKeyFound = true;
    //Remove the trailing '&'
    return returnVal.TrimEnd ('&');

Happy coding


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


About the Author

Comments and Discussions

-- There are no messages in this forum --
| Advertise | Privacy | Terms of Use | Mobile
Web01 | 2.8.150331.1 | Last Updated 23 Jun 2010
Article Copyright 2010 by Krish Van Colombo
Everything else Copyright © CodeProject, 1999-2015
Layout: fixed | fluid