Logic for adding value ontxtchanged event.

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I'm developing one web application in that i have one class file cement_class.cs in that i have done coding of all methods and property another class file in that i have done coding related to database for add/update/delete using store procedure now i have one aspx page and aspx.cs page it is basically related to cement information now i have three text boxes:

1) no of bags of cement
2)rate per bag
3)amount

So if no of bags is x and rate per bag is y so i want to directly print the answer x*y in that text box of amount perhaps using txtchange event....

so what should be the logic??and at which file i have to write this logic??in class file or aspx.cs file??please if possible anyone just give me idea for this...........

thanks...............

Posted 29-Jul-12 21:57pm

pandya purvang

Updated 29-Jul-12 22:01pm

Kenneth Haugland

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Christian Graus · Answer 1 · 2012-07-29T22:04:00

Solution 1

I guess you don't know ASP.NET. This is homework ? You can do a postback, but I'd just do it in javascript, which means it goes in your aspx file.

Posted 29-Jul-12 22:04pm

Christian Graus

efkah · Answer 2 · 2012-07-29T22:08:00

what does the aspx page do? does it only show database information?
in that case, why dont you just change your stored procedure to "select x, y, x*y as z" and bind it?

if the user inputs text and you want to evaluate with a postback, you can add code to the "onTextChanged" Event of the TextBox.
if you want to evaluate without a postback, try jQuery or the AJAX-Toolkit: http://www.asp.net/ajaxlibrary/act.ashx[^]