Calling javascript function from code behind

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I have an account settings page where the user can change the company name, admin password or main password. I am using javascript and links. When user click the "change admin password" link, the javascript code is called and the appropriate "div" is set to style.display=inline (otherwise its always style.display=none). After setting the password, the user clicks "Save Password" (a button). This causes a postback and so the visible "div" gets hidden.

I am trying to call a javascript function on page_load to check if the user was working on the admin password, it should display it i.e set style.display=inline... however i am unable to do that. The code i am using just gets called ONCE but not on every postback. Kindly help:

Here is my code for calling the javascript function on page_load

VB

If (Not ClientScript.IsStartupScriptRegistered("viewdiv")) Then

                Page.ClientScript.RegisterStartupScript _
(Me.GetType(), "viewdiv";, "view('divAdminPassword');", True)
            End If

And my javascript function is:

C#

function view(obj)
     {
         var div = document.getElementById(obj);


                div.style.display = "inline";

    }

Posted 15-Sep-10 21:59pm

freefika

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senguptaamlan 16-Sep-10 5:18am

I think you don't know how to invoke the javascript function...also go through the line Page.ClientScript.RegisterStartupScript and what it does...

4 solutions

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Simon_Whale · Answer 1 · 2010-09-16T05:10:00

Solution 1

CP VB / C# Javascript Article

Start with some background reading on the subject above is a CodeProject Article

Posted 16-Sep-10 5:10am

Simon_Whale

Comments

Dalek Dave 16-Sep-10 11:16am

Good Link

freefika · Answer 2 · 2010-09-29T03:59:00

this is really strange

i have the following code in one aspx file

VB

Dim link As String = "collection.aspx?SettleID=" & ViewState.Item("SettleID")
                           If (Not ClientScript.IsStartupScriptRegistered("OpenPage")) Then

                               Page.ClientScript.RegisterStartupScript _
                                                   (Me.GetType(), "OpenPage", "window.open('" & link & "');", True)

                           End If

it manages to open a new window with the url

when i try to use the same script on other pages, it does not work!
what could be the issue?

Vasim889 · Answer 3 · 2011-12-19T00:32:00

Solution 4

VB

page.clientscript.registerscriptblock(me.gettype(),"alert","alert('Invalid username',true)"

Posted 19-Dec-11 0:32am

Vasim889

Anuj Banka · Answer 4 · 2011-12-19T00:43:00

Solution 5

You can show hide your from code behind by just adding

<div id="div1"  runat="server"><div /></div>

and in code behind

div1.Attributes.Add("style","display:none");

or to hide div in code behind you can just write

div1.visible = false

Posted 19-Dec-11 0:43am

Anuj Banka

Updated 19-Dec-11 0:44am

v2