W3Schools.com

ASP QueryString Collection

Request Object Reference Complete Request Object Reference

The QueryString collection is used to retrieve the variable values in the HTTP query string.

The HTTP query string is specified by the values following the question mark (?), like this:

<a href= "test.asp?txt=this is a query string test">Link with a query string</a>

The line above generates a variable named txt with the value "this is a query string test".

Query strings are also generated by form submission, or by a user typing a query into the address bar of the browser.

Note: If you want to send large amounts of data (beyond 100 kb) the Request.QueryString cannot be used.

Syntax

Request.QueryString(variable)[(index)|.Count]

Parameter Description
variable Required. The name of the variable in the HTTP query string to retrieve
index Optional. Specifies one of multiple values for a variable. From 1 to Request.QueryString(variable).Count

Examples

Example 1

To loop through all the n variable values in a Query String:

The following request is sent:

http://www.w3schools.com/test/names.asp?n=John&n=Susan

and names.asp contains the following script:

<%
for i=1 to Request.QueryString("n").Count
  Response.Write(Request.QueryString("n")(i) & "<br />")
next
%>

The file names.asp would display the following:

John
Susan

Example 2

The following string might be sent:

http://www.w3schools.com/test/names.asp?name=John&age=30

this results in the following QUERY_STRING value:

name=John&age=30

Now we can use the information in a script: 

Hi, <%=Request.QueryString("name")%>. 
Your age is <%= Request.QueryString("age")%>.

Output:

Hi, John. Your age is 30.

If you do not specify any variable values to display, like this:

Query string is: <%=Request.QueryString%> 

the output would look like this:

Query string is: name=John&age=30

Request Object Reference Complete Request Object Reference
W3Schools Certification

W3Schools' Online Certification

The perfect solution for professionals who need to balance work, family, and career building.

More than 10 000 certificates already issued!

Get Your Certificate »

The HTML Certificate documents your knowledge of HTML.

The CSS Certificate documents your knowledge of advanced CSS.

The JavaScript Certificate documents your knowledge of JavaScript and HTML DOM.

The jQuery Certificate documents your knowledge of jQuery.

The XML Certificate documents your knowledge of XML, XML DOM and XSLT.

The ASP Certificate documents your knowledge of ASP, SQL, and ADO.

The PHP Certificate documents your knowledge of PHP and SQL (MySQL).

WEB HOSTING
Best Web Hosting
PHP MySQL Hosting
Best Hosting Coupons
UK Reseller Hosting
Cloud Hosting
Top Web Hosting
$7.95/mo SEO Hosting
Premium Website Design
WEB BUILDING
Download XML Editor
FREE Website BUILDER
Free Website Templates Free CSS Templates
Make Your Own Website
W3SCHOOLS EXAMS
Get Certified in:
HTML, CSS, JavaScript, XML, PHP, and ASP
W3SCHOOLS BOOKS
New Books:
HTML, CSS
JavaScript, and Ajax
STATISTICS
Browser Statistics
Browser OS
Browser Display
SHARE THIS PAGE