Hello,

I have one <tr style="display:block"> (htmltable row) which has style display:block in aspx page

Now onclick of one button i make that tr style to display:none from javascript

also from browser that row disappears,

however when i try to get display property in codebehind when postback, still it gives

display:block

I also check the page source from browser that any change i make from javascript doesnot affect in page source.

How to solve this problem?

Thanks.

 Yes javascript changes are not persisted when page is reloaded

in that case simply add runat="server" to tr and give an ID

<tr id = "myrow" runat = "server">

Thus not you can access it in code behind

myrow.Attributes.Add("style", "display:block")

Thanks mudassarkhan for reply,

but i want that user can hide some tr from clientside only and i also want that

in codebehind when postback occurs i get that value as hide only.

i.e. when one <tr id="testtr" runat="server" style="display:block"> when page loads first time

                              user click button and make them display:none by javascript

now he submit the page, now in codebehind i want the display style of testtr (html row) as none and not block

 You will need hidden field for that

Add a hidden field

<input id="hid" name = "hid" type="hidden" value = "block" />

Then on button click store the value  none in hidden field using javascript

now in codebehind do

testtr.Attributes.Add("style", "display:" + Request.Form["hid"]);

It will preserve the changes

Thanks mudassarkhan

I have many htmlrows,span tags, htmlcoloumns that hides from clientside (by javascript),

so to follow your suggested solution i have to take as many hidden variables as controls which affect from clientside.

Is there any short way or alternate soltion to solve this problem?

Again Thanks for helping me.

 No there is no shorter way JavaScript changes will always be discareded since each time your page is recereated only way

is to provide some value to Server as I did and do it Server side

Another solution is use updatepanel since it partially refreshes the page thus the HTML outside updatepanel will never be refreshed