Maximum length of Querystring

Maximum length of Querystring is based on the browser not depend upon the asp.net.
Maximum length of a querystring in IE 4.0 and above is ~2048 characters

IE. 4,5,6,7, - 2,048 characters.
Opera supports - 4050 characters.
Netscape 6 supports - 2000 characters.

Firefox Supports - 6000 characters