How to avoid multiple postbacks on asp page?

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I have ASP page in my .net Web application. There are lot of calculations on this asp page..
For example:
Textbox1
Textbox2
Textbox3...Textbox_n

And i want
Textbox2.text=textbox1.text/(2*100);
Textbox3.text=Textbox1.text+textbox2.text;
.....
like so many calculations to be done on textchanged event of many textboxes..

Every time when we change value in textbox the page is getting postbacked and due to multiple postbacks its taking so much time in loading...
How to avoid these multiple postbacks????????????

Posted 8-Mar-14 7:14am

Mayuri Gandhi

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3 solutions

Solution 1

Stopping the multiple postbacks of ASP.NET linkbutton[^]

Handle Multiple Postbacks with AspQ[^]

2nd link might solve your problem :)

-KR

Posted 8-Mar-14 7:20am

Krunal Rohit

Solution 3

To stop postback of page, you need to implement the ajax call from the webpage page.

You need to call a javascript function from the client side, and that function we can write all the condition. If the values will come from the database then you need to write the static web methods in the code behind page and we need to do the ajax call. Using ajax call we can prevent the post back of web page.

Posted 9-Mar-14 4:48am

Singh Rajan

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Mayuri Gandhi 9-Mar-14 13:27pm

Can you explain in detail with example??????
I dont have any idea how to do this...
Thanx..

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JoCodes · Accepted Answer · 2014-03-08T23:48:00

Solution 2

You should consider to do the Calculations using Client side scripts to avoid Postbacks.

Posted 8-Mar-14 23:48pm

JoCodes

Comments

Mayuri Gandhi 9-Mar-14 13:25pm

How to do Client side scripts.. I dont have any Idea..
Plz give a example..

JoCodes 9-Mar-14 23:26pm

Ok No problem. Try these links
http://stackoverflow.com/questions/15251780/calculating-total-from-textbox-live-using-javascript
http://www.dotnetgallery.com/lab/resource54-Get-textbox-value-using-jquery-in-aspnet.aspx
http://www.dotnetcodesg.com/Article/UploadFile/2/235/Sum%20of%20All%20Text%20Box%20Value%20on%20fly%20using%20jQuery%20in%20ASP.NET.aspx

Mayuri Gandhi 10-Mar-14 5:59am

THANK YOU SO..... MUCH FOR YOUR SOLUTION....
BUT STILL MY PROBLEM PERSISTS...

THE SOLUTION IN FIRST LINK IS NOT WORKING AND IN THIRD LINK SOLUTION IS WORKING AND ITS TOO GOOD BUT IN THAT OPERATION IS DONE ON ALL TEXTBOXES WHEREAS I WANT TO DO OPREATION ON SPECIFIC TEXTBOXES AND ALL OPERATIONS ARE DIFFERENT....
PLZ HELP..
THANK YOU...

JoCodes 11-Mar-14 3:53am

You can easily filter the needed textboxes using jqueryselector

Mayuri Gandhi 11-Mar-14 4:03am

Ya..Done...
Thank you very much...

JoCodes 11-Mar-14 4:23am

You are always welcome . Glad to hear that issue got resolved.

Mayuri Gandhi 11-Mar-14 7:38am

Plz help me in another issue..

I want gridview with add,delete,edit buttons and also gridview should contain combobox and textbox..
combobox is to be filled with values from database and should have selectedindexchanged event..
textbox should also have textchanged event..

See the following senario : In gridview,

add edit delete | column1 | column2 | column3

add edit delete | combobox1 | textbox1 | textbox2

_______________________________________________________________________________
Total: textbox3 = addition(textbox2)

combobox contains rate in % like 2%, 3%, 4%... etc

and textbox have validation to allow only numbers

then,

Decimal total = Convert.ToDecimal(textbox1.Text)*Convert.ToDecimal(combobox1.SelectedValue/100);
TextBox2.Text = total.ToString();

textbox3.text= total in 3rd column

Plz help..URGENT..
Jquery and Javascript prefered..Plz.. because if we use plain asp it will take so much time in load and add/edit/delete buttons

JoCodes 12-Mar-14 1:23am

Can you post it as a new question?

Mayuri Gandhi 12-Mar-14 13:48pm

I have already posted it as a new question..

JoCodes 13-Mar-14 3:08am

Can you give me the link of the new question?

Mayuri Gandhi 14-Mar-14 2:41am

http://www.codeproject.com/Questions/742141/How-Do-I-Add-Combobox-And-Textbox-In-Gridview-With

Plz give me another solution if you have..
Someone had posted a answer but its taking too much time in adding and deleting rows.. Plz check and help as early as possible..

JoCodes 14-Mar-14 6:50am

You have already accepted the answer for the solution.

Mayuri Gandhi 14-Mar-14 2:46am

Plz help inanother problem too plz..
Go through link below..
http://www.codeproject.com/Questions/741141/How-to-export-hindi-data-from-gridview-to-excel-fi