Runat server Property and Javascript

Question

1.00/5 (1 vote)

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Hi every body,

In my asp.net page i have Hiddenfield control,
and i want to use the id of this control in client side code by using javascript and in sever side code by c#.

the problem is that:

to use the id of Hiddenfield control in client side code by using javascript i must not used the property of runat = "server",

and to use the id of Hiddenfield control in server side code by using c# i must using the property of runat = "server"

as when i using runat property i cannot use the control by javascript like:

JavaScript

document.getElementById("hdSaveHtml").value = "any thing";

it give me null.

my asp.net page has master page and this master page has another master page and all are inside folder in the project

Posted 2-Oct-11 20:51pm

MrLonely_2

Updated 3-Oct-11 0:20am

v4

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Comments

kiran dangar 3-Oct-11 9:23am

Hi, can you explain what kind of trouble you are having after trying all solutions below.. If possible paste your aspx file coding as well..

4 solutions

Solution 1

Try to query for the ClienID in your javascript code.

document.getElementById("ct100_ContentPlaceHolderName_hdSaveHtml").value = "any thing";

Best regards

Posted 2-Oct-11 21:04pm

SvenMe

Comments

MrLonely_2 3-Oct-11 3:47am

I try that but not help, sorry.
the id is ctl00_ctl00_MainContent_OperatorContent_hdSaveHtml

Solution 3

Use JQuery and life will be simple

just write this way

HTML

var DisId = $('#hdnDisId').val();

Posted 2-Oct-11 21:08pm

Anuja Pawar Indore

Comments

MrLonely_2 3-Oct-11 3:47am

not help too

Anuja Pawar Indore 3-Oct-11 6:36am

Place your code, as it should work, whether u have master page or control inside a master page

Solution 4

Use the view source option in your browser, findout the correct id for the hidden field you are using in your page, as you are using a master page the id for the hidden control changes . Copy paste the id you found in your page source for hidden control to your javascript.

Posted 2-Oct-11 21:08pm

sujit0761

Updated 2-Oct-11 21:09pm

v2

Comments

MrLonely_2 3-Oct-11 3:48am

the problem still and id is ctl00_ctl00_MainContent_OperatorContent_hdSaveHtml

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hitech_s · Accepted Answer · 2011-10-02T21:05:00

Solution 2

you can access server control from javascript like this

<asp:HiddenField ID="hdSaveHtml" runat="server" />

document.getElementById('<%=hdSaveHtml.ClientID %>').value="0";

in code behind you can access like normal control

Posted 2-Oct-11 21:05pm

hitech_s

Updated 2-Oct-11 21:08pm

v2

Comments

P.Salini 3-Oct-11 3:14am

My 5!

MrLonely_2 3-Oct-11 3:46am

I try that but not help, sorry.

hitech_s 3-Oct-11 6:57am

provide your .aspx code ,i will try my level best