What is Query String and what are their benefits and limitations?

The query string is the information sent to the server appended to the end of a page URL.

The benefits of using query string for state management are as follows:-

1)    There is no server resources are required. The query string having the HTTP requests for a specific URL.

2)    All the browsers support query strings.

The limitations of query string for state management are as follows:-

1)    The Query string data is directly visible to user hence leading to security problems.-

2)    Most of the browsers and client devices impose a 255-character limit on URL length.

Below is a sample "Login" query string passed in URL https://www.querystring.com/ login.asp?login=testing. This query string data can then be requested later by using Request.QueryString("login").