This document discusses how to parse and manipulate query strings in C#. It shows how to use the HttpUtility.ParseQueryString method to parse a query string into a NameValueCollection that can then be accessed and modified like a dictionary. The ToString method on the NameValueCollection returns the query string representation.

1. QueryString
HttpValueCollection
By Jax

2. [Serializable]
internal class HttpValueCollection : NameValueCollection
{

3. NameValueCollection q = System.Web.HttpUtility.ParseQueryString("test=value1&test=value2");
q.ToString();
// test=value1&test=value2
NameValueCollection q = System.Web.HttpUtility.ParseQueryString("");
q["id"] = "11";
q["name"] = "Jax";
q.ToString();
// id=11&name=Jax