get control id from the content page

[srinandan]

hi, i have need a functionality like as soon we click the button at the moment that button will hide and after that the functionality should fire written in code behind along with that button.i am working as follows; function check() { document.getElementById('Button1').style.visibility= "hidden"; return false; } code behind as follows: protected void Page_Load(object sender, EventArgs e) { Button1.Attributes.Add("onclick", "javascript:return check()"); } protected void Button1_Click(object sender, EventArgs e) { Response.Write("success"); } this not working properly. and i have to do this for a content page having this Button1 so the problem is the the getElementById is not working. Regards, Srinandan..

[ca8msm]

When the HTML is written out to the Page, your button's ID in the HTML probably isn't "Button1". That means your javascript method will fail. To get around this, write the javascript into a String on the Server-Side and add it to the Page by using the RegisterClientScriptBlock method. When inserting the Button's ID, use MyButton.ClientID to get the correct id.

Mark, http://aspnetlibrary.com

[Sylvester george]

if you say return false; the page will not submit

Regards, Sylvester G sylvester_g_m@yahoo.com

[srinandan]

thanks for reply if i will make the return true then the button will hide for moment but i have need to hide for that time. srinandan..

[Sylvester george]

when the button again want to visible for you?

Regards, Sylvester G sylvester_g_m@yahoo.com

[Jesse Squire]

In order to ensure that controls have a unique id on the page, ASP.NET will rename your controls as it renders them. In order for you to retrieve the id of a server control on the client side, you will need to progratically reference the ClientID property of the button. Using the ClientID property, you could refactor your code into something like: Client Script:

<script language="javascript" type="text/javascript">

function check(buttonId)

{

button = document.getElementById(buttonId);

if (button)

{

button.style.visibility = "hidden";

}

return false;

}

</script>

Server Code:

protected void Page_PreRender(object sender, EventArgs ea)

{

button1.Attributes.Add("onclick", String.Format("javascript:return

[srinandan]

thanks Sylvester As soon the button will click at the moment it should be hide after that the Button1_Click() events should fire. in this method i am check some condition if the functionality goes success then no need to show that button if functionality failure then the button should visible its all. regards, Srinandan

[srinandan]

thanks you Jesse but problem with here when return false then the server code is not firing i have need to visible=hidden in client and then fire the server code Regards, Srinandan

[Sylvester george]

in the catch block you can make the button visible like the following line Button1.Visible = true;

Regards, Sylvester G sylvester_g_m@yahoo.com

[srinandan]

hi Sylvester I am doing this but this is not my problem.the problem with me when the button goes hidden in client the the server code is not firing. Regards, Srinandan..

[Jesse Squire]

I'm sorry, I must have misunderstood your post. If you'd like the server code to fire, simply change the javascript function to return true instead.

--Jesse "... the internet's just a big porn library with some useful articles stuck in." - Rob Rodi

[srinandan]

thanks Jesse:) my problem has been solved if rmove the return value or return the true. thanks for making reply. Regards, Srinandan