Checksum of .aspx/.ascx

Question

Hi I have a requirement where i have to show a javascript alert when you move from tone .net page to another .net page but condition is that at least one control's value on that page should have changed. Actually there are more than one page in tabs format. You are on a tab1. You edit the page and make some changes and now you click on tab2 but before moving to tab2 you want to show a validation message. Validation message should appear only when there is any change on the page. I have heard about checksum but don't know how to use it and this will work on not. Any help would be appreciated. Thanks in advance

Pooja Sharma · Answer

Thanks for your reply. I have little bit knowledge of JQuery This JQuery code showing message not only when leaving blank input controls but even when no control is left blank. 'isDirty' flag is always true. I think this is just handling textbox (input) but a page can have other controls like dropdown listbox etc. Not sure this code will work with other controls. Can you please provide me more help on this?

Manikavelu Velayutham · Answer

Hope you know about the JQUERY. Just download the JQUERY javascript file from JQUERY.com and include the file in your project. Following code will help you to find the dirty save. text/javascript > var isDirty = false ; var msg = 'This page has unsaved changes.

Click OK to abandon the changes and leave the page.

Click Cancel to stay on the page so you can save your changes.' ; $( document ).ready( function () { $( ':input' ).change( function () { if (!isDirty) { isDirty = true ; } }); window .onbeforeunload = function () { if (isDirty) return msg; }; }); mark this post as answered if this post really helps you.

hariom indore · Answer

u have to write a function for alert and call it on body onload event. when u do any change on page one then make a hidden varible value and check it whne u click another tab