<div>
Which Page_Load are you talking of? The Master page's Page_Load or the content page's Page_Load?
</div>

<div>
his one works for me: 
 
&lt;asp:Button ID=&quot;Button1&quot; runat=&quot;server&quot; OnClientClick=&quot;return confirm('OK to Delete');&quot; onclick=&quot;Button1_Click&quot; Text=&quot;Button&quot; /&gt; 
 
&nbsp;If it doesn't work on your side then the problem is with your browser (may be it blocks JavaScript) 
 
I hope this helps
</div>

<div>
&gt;&gt; Which Page_Load are you talking of? The Master page's Page_Load or the content page's Page_Load? 
 
the content page's page_load. 
 
&gt;&gt;&lt;asp:Button ID=&quot;Button1&quot; runat=&quot;server&quot; OnClientClick=&quot;return confirm('OK to Delete');&quot; onclick=&quot;Button1_Click&quot; Text=&quot;Button&quot; /&gt; 
 
I want to put it in the content page because that button is used all over the place in the master page. Anyway to do it in code behind..using attributes.add? 

</div>

<div>
and actually, i want to do this instead of confirm. I used &quot;confirm&quot; as an example. I want to do: 
 
window.opener.reload(); &nbsp;: so I have that page1.aspx that uses a Master page button. I pop it up. click submit, do &quot;onClick&quot; and then want to do &quot;OnClientClick&quot; to update the orig page that opened it.
</div>

<div>
then change it to 
Master.OkButton.Attributes.Add(&quot;OnClientClick&quot;, &quot;javascript: return confirm('''');&quot;);
</div>

<div>
&gt;&gt;&gt;the content page's page_load. 
Try using the Page_Load event handler in the Master page. 

</div>

<div>
i think prairiedog is right. My coworker has the file checked out. Will try it later and post back. Thanks,
</div>

<div>
you know what..if I put it in page_load of master page..any page that uses that master page will get that window.opener.reload..no? I want it to be specific to page1.aspx. Only refresh/reload the page that pops page1.aspx. 
 
so page1.aspx gets popped. page0.aspx pops it. page1.aspx uses a masterpage. i want page0.aspx to be reloaded only. NOT any page that uses that master page.
</div>

<div>
First of all, If you just want one specific page to have this popup, then why bother to have a button on the Master page? You can just add a button on the content page to do the popup. 
Anyway, if you still want to keep your current design, you can still do it. You will need to find the button in the Master page from your content page, then you can add the onclick attribute to it. 
Button btn = (Button)this.Master.FindControl(&quot;OKButton&quot;); 
OKButton.Attributes.Add(&quot;onclick&quot;, &quot;javascript:return confirm('Are you sure?')&quot;); 

</div>

<div>
This app was designed 2 yrs ago. Cant change the design. 
 
&gt;&gt;You can just add a button on the content page to do the popup. 
&nbsp; ***let me explain. 
page0.aspx does have a button to popup page1.aspx. Lets call this btnContent. 
page1.aspx has the submit button that's on master page. btmMasterSubmit (for example) 
 
when page1.aspx submit is clicked, page0.aspx needs to be refershed. I can't use btnContent that's on the content page of page0.aspx to to refresh page0.aspx. 
 
*** let me try your code and see if that works. Thanks, 
 
 

</div>

<div>
You can still put this in the master page and have the event attached when the page is page0.aspx. 
 

<pre><code class="code-1 nolinks" id="code-262362">string strURL = Request.ServerVariables[&quot;URL&quot;].Substring(Request.ServerVariables[&quot;URL&quot;].LastIndexOf(&quot;/&quot;) + 1) ;
 strURL = strURL.Substring(0, strURL.LastIndexOf(&quot;.&quot;));
 if (strURL == &quot;page0&quot;)
 {
 OkButton.Attributes.Add(&quot;onClick&quot;, &quot;javascript: return confirm('''');&quot;);
 }
</code></pre>
</div>

<div>
thanks Siancell. Will try the solutions once my coworker is done with the page.
</div>

<div>
@siancell, your suggestion will work. But my concern would be that that block of code will be executed on each content page which brings in some overhead. 
</div>

<div>
ah, yes, i dont want it on each content page. Let me try prairiedog's suggestion now.
</div>

<div>
I tried: 
Button btn = (Button)this.Master.FindControl(&quot;OKButton&quot;); 
btn.Attributes.Add(&quot;onclick&quot;, &quot;javascript:return confirm('Are you sure?')&quot;); 
 
but &quot;btn&quot; comes out as null. I tried it in page_load of page1.aspx (the one being popped-up) and also in page_init. 
 
Master page has below. I know it's not btnApply/ApplyButton (tried it anyway). I tried &quot;OkButton&quot; and &quot;btnOk&quot; in the code above but keeps giving me null. 

<pre><code class="code-10 nolinks" id="code-262416">&lt;asp:ContentPlaceHolder ID=&quot;Buttons&quot; runat=&quot;server&quot;&gt;
 &lt;asp:Panel DefaultButton=&quot;btnOk&quot; runat=&quot;server&quot;&gt;
 &lt;div id=&quot;safe-buttons&quot;&gt;
 &lt;asp:Button ID=&quot;btnOk&quot; Text=&quot;OK&quot; Width=&quot;100px&quot; OnClick=&quot;btnOk_Click&quot; runat=&quot;server&quot; /&gt;
 &lt;asp:Button ID=&quot;btnApply&quot; Text=&quot;Apply&quot; Width=&quot;100px&quot; OnClick=&quot;btnApply_Click&quot; runat=&quot;server&quot; /&gt;
 &lt;/div&gt;
 &lt;div id=&quot;unsafe-buttons&quot;&gt;&lt;asp:Button ID=&quot;btnCancel&quot; Width=&quot;100px&quot; OnClick=&quot;btnCancel_Click&quot; Text=&quot;Cancel&quot; CausesValidation=&quot;false&quot; runat=&quot;server&quot; /&gt;&lt;/div&gt;
 &lt;/asp:Panel&gt;
 &lt;/asp:ContentPlaceHolder&gt;
 
---
public Button OkButton
 {
 get { return btnOk; }
 }
 
 public Button ApplyButton
 {
 get { return btnApply; }
 }
 
 public Button CancelButton
 {
 get { return btnCancel; }
 }
</code></pre>
</div>

<div>
Anything defined in the ContentPlaceHolder section in the Master page will be replaced by the content page!!! 
Move those buttons out of the ContentPlaceHolder section so that you can access them later on. 

</div>

<div>
ah. But howcome page1.aspx has: 
 
&nbsp; &nbsp; &nbsp; &nbsp; Master.OkButton.Text = &quot;Submit&quot;; 
 
**this is in page_prerender of page1.aspx. 
 
and this in page1.aspx's page_preinit: 
&nbsp;// wire local implementation to master page events 
&nbsp; &nbsp; &nbsp; &nbsp; Master.OkClick += new EventHandler(Page_OkClick); 
 
***seems like it can access the master page, no?
</div>

<div>
Because OKButton is a property of the Master page, not a control defined in the Master page. 
In your case, do something like this: 
MasterPageClassName mast = (MastPageClassName)this.Master; 
mast.OKButton.Attributes.Add(&quot;onclick&quot;, &quot;javascript:return confirm('Are you sure?')&quot;); 
Replace &quot;MasterPageClassName&quot; with the actual class name of your master page. 

</div>

<div>
let me try. Thanks for sticking with this.
</div>

<div>
WORKS! thanks so much. Now let me try my window.opener.reload ..instead of that confirm and see. 
</div>

<div>
hmm... doesnt reload the page that popped page1.aspx. 
so, page0.aspx popps page1.aspx. I click submit. I have this code in page_load of page1.aspx. 
 
*** Javascript confirm sample works. 
*** this one didnt. I dont see the page being reloaded. Data stays the same. 
 
-- if i need to close this question and open another one, please let me know 

<pre><code class="code-1 nolinks" id="code-262494"> MasterPages_Edit mast = (MasterPages_Edit)this.Master;
 mast.OkButton.Attributes.Add(&quot;onclick&quot;, &quot;javascript:return function() {window.opener.location.reload();}&quot;);
 
</code></pre>
</div>

<div>
did this: i put the function in page1.aspx page: 
&nbsp;function test() 
&nbsp; &nbsp; { 
&nbsp; &nbsp; &nbsp; alert(&quot;testing reload&quot;); 
&nbsp; &nbsp; &nbsp; window.opener.location.reload(); 
&nbsp; &nbsp; 
&nbsp; &nbsp; } 
 
then in code i have: 
&nbsp;MasterPages_Edit mast = (MasterPages_Edit)this.Master; 
&nbsp; &nbsp; &nbsp; &nbsp; mast.OkButton.Attributes.Add(&quot;onclick&quot;, &quot;javascript:return function test(); &quot;); 
&nbsp; &nbsp; &nbsp; &nbsp; 
**** but i dont see the alert being popped up when I click submit. That javascript &quot;confirm&quot; works tho.
</div>

<div>
Try this: 

<pre><code class="code-1 nolinks" id="code-262519"> MasterPages_Edit mast = (MasterPages_Edit)this.Master;
 mast.OkButton.Attributes.Add(&quot;onclick&quot;, &quot;test(); &quot;);
</code></pre>
</div>

<div>
Very close.... This happens: 
 
I popup the page1.aspx from page0.aspx. 
I click submit, javascript is called. I see the alert. page1.aspx (pop-up window) closes. 
On the parent window, i see a msg (i'm using IE) that page wants to close. (i dont want to see this IE msg). I click yes to reload the page. Parent page reloads. &nbsp;THEN, the pop-up pops up again! 
 
This is how I call the pop-up to begin with. I changed my test JS function to below as well but didnt make a difference. 
 
How can I get rid of the IE msg (if possible) and prevent the pop-up from popping up again? 

<pre><code class="code-10 nolinks" id="code-262544"> string newPageurl = &quot;NewOrder.aspx?CustomerId=&quot; + Order.Customer.Id + &quot;&amp;orderID=&quot; + Order.Id;
 
 string script = &quot;OpenDetail('_blank','&quot; + newPageurl + &quot;',1280,980,'center','center'); &quot;;
 ScriptManager.RegisterStartupScript(this, this.GetType(), &quot;Redirect&quot;, script, true);
 
---
 function test()
 {
 alert(&quot;testing reload&quot;);
 window.opener.location.reload();
 this.close();
 // return false;
 }
</code></pre>
</div>

<div>
&gt;&gt;&gt;How can I get rid of the IE msg (if possible) 
Whenever you try to use JavaScript to close a parent window, you will see that warnign message, no way around, sorry. 
&gt;&gt;&gt;prevent the pop-up from popping up again? 
Try this: uncomment line 12. 

</div>

<div>
1. uncommented but pop-up popped up again. 
Maybe it should be somewhere on this line?? I tried this.close() after OpenDetail but got a JS error. 
&nbsp;string script = &quot;OpenDetail('_blank','&quot; + newPageurl + &quot;',1280,980,'center','center'); &nbsp; &quot;; 
&nbsp; &nbsp; &nbsp; &nbsp; ScriptManager.RegisterStartupScript(this, this.GetType(), &quot;Redirect&quot;, script, true); 
 
 
&gt;&gt;Whenever you try to use JavaScript to close a parent window 
I'm closing a child window ( the pop up window). I guess you meant &quot;use javascript to LOAD&quot; 
 
Any other way to load a parent page??
</div>

<div>
it's like when I reload the parent page, the button that pops up page1.aspx has still has the focus and just pops up again.
</div>

<div>
Once that page is popped ONCE, then i close it manually. I refresh the parent page manually as well (by right clicking on the page and choosing refresh&quot;...It keeps popping. So, it's not even thru code that it pops. BUT, only happens when it is popped at least ONCE.
</div>

<div>
How do you pop up the new window?
</div>

<div>
in page0.aspx's button click event. I do it like this in code-behind because I want to attach an orderid and customerID to pass to the pop-up. 
 

<pre><code class="code-10 nolinks" id="code-262574"> protected void btnEditOrder_Clicked(object sender, EventArgs e)
 {
 
 Order.ReleaseLock();
 string newPageurl = &quot;NewOrder.aspx?CustomerId=&quot; + Order.Customer.Id + &quot;&amp;orderID=&quot; + Order.Id;
 string script = &quot;OpenDetail('_blank','&quot; + newPageurl + &quot;',1280,980,'center','center'); &quot;;
 ScriptManager.RegisterStartupScript(this, this.GetType(), &quot;Redirect&quot;, script, true);
 
 
 }
</code></pre>
</div>

<div>
hmm... i thought it's a Javascript function. I got that line from somewhere else in the code. Let me see.
</div>

<div>
ah, it's a custom JS code. It's below. But I dont have to use that. I used it just because it's used in other parts of the code. I think I tried &quot;window.open&quot; at first and couldnt open the page to size. So, I used the custom function that came with the app. 
 
I can post it if you want but I if I can get window.open open with those properties i have, then that's fine.
</div>

<div>
Will this work? 

<pre><code class="code-1 nolinks" id="code-262583">function test()
 {
 alert(&quot;testing reload&quot;);
 if(!window.opener.location)
 window.opener.location = self;
 window.opener.location.reload();
 window.close();
 }
 }
</code></pre>
</div>

<div>
No, poped up, clicked sumbit, i got that IE msg. I clicked 'retry'.Parent page loaded BUT, the pop-up page poped-up again! 
Geez! 

</div>

<div>
This is the OpenDetail JS code. 

<pre><code class="code-10 nolinks" id="code-262598">function OpenDetail(name, url, width, height, topOffset, leftOffset)
{
 //cleanup name
 
 if (name != null &amp;&amp; name != &quot;_blank&quot;)
 {
 name = CleanWindowName(&quot;obj&quot; + name);
 }
 
 // default the width and height if not supplied
 if (isNaN(width))
 {
 width = 800;
 }
 
 if (isNaN(height))
 {
 height = 600;
 }
 
 var win;
 var features = &quot;height=&quot; + height + &quot;,width=&quot; + width + &quot;,status=yes,resizable=yes,menubar=no,toolbar=no,location=no,scrollbars=yes&quot;;
 
 // determine the top offset based on values supplied
 if (topOffset != null &amp;&amp; topOffset.length &gt; 0)
 {
 if (isNaN(topOffset))
 {
 if (topOffset.toLowerCase() == &quot;center&quot;)
 {
 features += &quot;,top=&quot; + ((window.screen.availHeight - height) * .4) //visually center window vertically
 }
 }
 else
 {
 features += &quot;,top=&quot; + topOffset;
 }
 }
 
 // determine the left offset based on values supplied
 if (leftOffset != null &amp;&amp; leftOffset.length &gt; 0)
 {
 if (isNaN(leftOffset))
 {
 if (leftOffset.toLowerCase() == &quot;center&quot;)
 {
 features += &quot;,left=&quot; + ((window.screen.availWidth - width) * .5) //visually center window horizontally
 }
 }
 else
 {
 features += &quot;,left=&quot; + leftOffset;
 }
 }
 
 // if there is no url, do nothing
 if (!url)
 {
 url = &quot;about:blank&quot;;
 }
 
 win = window.open(url, name, features);
 win.focus();
 
 window.setTimeout(function anonymous() {win.focus();}, 200);
 return win;
}
</code></pre>
</div>

<div>
I put a debug step. When parent page reloads..it calls the buttonevent again!!! and that's why the page loads again. But why?? is it because the first time I click the button..maybe it keeps the focus on that button?? so during reload, it still has the foucs??
</div>

<div>
OK, let's try using window.open to load the popup window to see if it makes any difference. 
&nbsp; 
 

<pre><code class="code-1 nolinks" id="code-262606">protected void btnEditOrder_Clicked(object sender, EventArgs e)
{
	Order.ReleaseLock();
	string newPageurl = &quot;NewOrder.aspx?CustomerId=&quot; + Order.Customer.Id + &quot;&amp;orderID=&quot; + Order.Id;
	string script = &quot;window.open('&quot; + newPageurl + &quot;', 'Details', 'status=1,scrollbars=1, width=800,height=600');&quot;);
	ScriptManager.RegisterStartupScript(this, this.GetType(), &quot;Redirect&quot;, script, true); 
}
</code></pre>
</div>

<div>
see my msg above. I think we posted at the same time. 
I put a debug step. When parent page reloads..it calls the buttonevent again!!! and that's why the page loads again. But why?? is it because the first time I click the button..maybe it keeps the focus on that button?? so during reload, it still has the foucs?? 
 

</div>

<div>
The reason is that when you clicks the button, then the page is posted back and the code behind function is called, then the new pops up. When you reload the parent window, because it was posted before, it will be posted again which will run the code behind code again and eventually get the new window poped up again. 
The code I gave you for the &quot;test&quot; was trying to stop the parent page from refreshing itself but just redirect to the parent page, but it didn't work obviously. I don't know if it will work if you use window.open(), and that is why I wanted you to try window.open(). If still no success, then we will use some other way. 

</div>

<div>
let me try window.open 
 
I have a meeting soon but I will keep this question open. I might not respond until later.
</div>

<div>
no, didnt work. 
 
Anyway to popup the page from aspx page instead of code behind BUT somehow attached the 2 ids to it. Would that make a difference?
</div>

<div>
If still no success, try this: 
Add a HiddenField on the parent page, say called hdnPopup, set its value = 1 
Then use the following function: 
 

<pre><code class="code-10 nolinks" id="code-262614">protected void btnEditOrder_Clicked(object sender, EventArgs e)
{
	if (hdnPopup.Value == &quot;0&quot;)
	{
		Order.ReleaseLock();
		string newPageurl = &quot;NewOrder.aspx?CustomerId=&quot; + Order.Customer.Id + &quot;&amp;orderID=&quot; + Order.Id;
		string script = &quot;window.open('&quot; + newPageurl + &quot;', 'Details', 'status=1,scrollbars=1, width=800,height=600');&quot;);
		ScriptManager.RegisterStartupScript(this, this.GetType(), &quot;Redirect&quot;, script, true); 
		hdnPopup.Value = &quot;1&quot;;
	}
}
</code></pre>
</div>

<div>
Sorry, try this function: 

<pre><code class="code-10 nolinks" id="code-262616">protected void btnEditOrder_Clicked(object sender, EventArgs e)
{
	if (hdnPopup.Value == &quot;1&quot;)
	{
		Order.ReleaseLock();
		string newPageurl = &quot;NewOrder.aspx?CustomerId=&quot; + Order.Customer.Id + &quot;&amp;orderID=&quot; + Order.Id;
		string script = &quot;window.open('&quot; + newPageurl + &quot;', 'Details', 'status=1,scrollbars=1, width=800,height=600');&quot;);
		ScriptManager.RegisterStartupScript(this, this.GetType(), &quot;Redirect&quot;, script, true); 
		hdnPopup.Value = &quot;0&quot;;
	}
}
</code></pre>
</div>

<div>
will try tonight. Showed it to my manager. We have a 3rd party tool, Telerik.He says maybe i should popup the entire page in a Telerik. Seems like i dont have to use Javascript for that. &nbsp;He didnt like the IE msg that says page is being reloaded. 
 
let me try your method and then see. Thanks so much for sticking with this.
</div>

<div>
I cant use that Telerik. I will try your code and then my coworker says he has a way to get around that IE msg. 
 
Will post back. Hope your code works.
</div>

<div>
I jus tried the code on my machine, unfortunately it does not work. But I did find a solution. 
It seems that you are using AJAX UpdatePanel, what you need to do is to move the Edit button inside of the UpdatePanel. Still use your old code for popping up the window, still use the old JavaScript to reload the parent window and close the child window, and everything is fine. 
The reason is AJAX UpdatePanel will not generate postback, so when you use JavaScript to reload the parent page, it does not give you the &quot;Retry&quot; message. 
Here is the code I used on my machine: 
 

<pre><code class="code-10 nolinks" id="code-262706">protected void btnEditOrder_Clicked(object sender, EventArgs e)
{	
	Order.ReleaseLock();
	string newPageurl = &quot;NewOrder.aspx?CustomerId=&quot; + Order.Customer.Id + &quot;&amp;orderID=&quot; + Order.Id;
	string script = &quot;window.open('&quot; + newPageurl + &quot;', 'Details', 'status=1,scrollbars=1, width=800,height=600');&quot;);
	ScriptManager.RegisterStartupScript(this, this.GetType(), &quot;Redirect&quot;, script, true); 	
}
 
//JavaScript
&lt;script language=&quot;javascript&quot; type=&quot;text/javascript&quot;&gt;
function test()
{
 alert(&quot;testing reload&quot;);
 
 window.opener.location.reload();
 window.close();
}
 
&lt;/script&gt;
</code></pre>
</div>

<div>
oh, yes, i do have Updatepanel. Actually, I have Telerik RadAjaxManager that's similar to UpdatePanel. 
 
Let me try this. Brain is fried. Will try tonight or this weekend and post back. Thanks once again for your help.
</div>

<div>
IT WOOOOOOOOORRRRRRRRRRKKKKKKKKKKSSSSSSSSS :) 
 
I cant believe it. It does work. It's beautiful. Thank you so much. I really cant thank you enough for helping me with this. Kamila.
</div>

<div>
You are welcome. I learned something through this question. Very glad it worked finally. I guess we can all have a good weekend now. 

</div>

<div>
<div class="content wysiwyg-content">
I have a master page with the button on it. I use this master page for my page1.aspx. 
 
When I click the submit button on page1.aspx page (note the button is actually on Master page)..i want to fire OnClientClick and call a Javascript . (I dont think i can use OnClientClick in .Net code behind, so I'm using onClick). 
 
I put that one line of Master.OkButton.Attibutes in &quot;page_load&quot;, &quot;page_init&quot; and Page_prerender , i click the submit button but i dont see the 
confirm button popping up. ***I tried all 3 locations separately*** 
 
what am I missing? 

<pre><code class="code-1 nolinks" id="code-262251">// wire local implementation to master page events
 Master.OkClick += new EventHandler(Page_OkClick);
 
 Master.OkButton.Attributes.Add(&quot;onClick&quot;, &quot;javascript: return confirm('''');&quot;);
</code></pre>
</div>
</div>

I have a master page with the button on it. I use this master page for my page1.aspx.

When I click the submit button on page1.aspx page (note the button is actually on Master page)..i want to fire OnClientClick and call a Javascript . (I dont think i can use OnClientClick in .Net code behind, so I'm using onClick).

I put that one line of Master.OkButton.Attibutes in "page_load", "page_init" and Page_prerender , i click the submit button but i dont see the
confirm button popping up. ***I tried all 3 locations separately***

what am I missing?

onClick wont fire

The successor to Active Server Pages, ASP.NET websites utilize the .NET framework to produce dynamic, data and content-driven web applications and services. ASP.NET code can be written using any .NET supported language. As of 2009, ASP.NET can also apply the Model-View-Controller (MVC) pattern to web applications