window.close() not working inside masterpage and control Panel

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I have a .aspx page in which I have a Asp:Button, clicking on which user browser(Opera) tab will be closed. After googling alot a found a solution to acheive this from code behind. (for Opera)

XML

<asp:Button ID="BTN" runat="server" Text="close the window" onclick="BTN_Click"/>

I have put this code in Page.Load event.

BTN.Attributes.Add("onclick", "window.close();");

This is What it renders in HTML

XML

<input type="submit" name="BTN" value="close the window" onclick="window.close();" id="BTN">

It is working fine as expected, user clicks the button and window is closed. Please note down browser is Opera.

Now look at the same code, the only difference is the button is inheriting Master Page and Content Panel Properties, so in this case it is rendered like this

XML

<input type="submit" name="ctl00$MainContentPlaceHolder$BTN" value="close the window by clicking me" onclick="window.close();" id="ctl00_MainContentPlaceHolder_BTN" clientidmode="static">

Now user clicks on this but unexpectedly it just refreshes the browser window and doesn't close the window.
I have put these rendered codes here because i firmly beleive it is the ID which is the culprit. If it is so Can you please suggest me how to achieve this from code behind??

Posted 16-Jun-15 19:30pm

RVPathi

Updated 16-Jun-15 22:13pm

F-ES Sitecore

v2

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Comments

Sreekanth Mothukuru 17-Jun-15 1:55am

First, try to find the button control with the name and then apply "onclick" attributes to it. Whatever be the id at runtime, you can find it using the id.

RVPathi 17-Jun-15 2:39am

Yep, thats what i Want. But how?
till now I have tried this:
MasterPage ctl00 = FindControl("ctl00") as MasterPage;
ContentPlaceHolder MainContent = ctl00.FindControl("MainContentPlaceHolder") as ContentPlaceHolder;
Button BTN1 = MainContent.FindControl("BTN") as Button;

what next??

Sreekanth Mothukuru 17-Jun-15 2:45am

You just don't need to find the master page. Only try to find the button control on the page. Like,
this.FindControl("Btn") or Page.FindControl("Btn")

RVPathi 17-Jun-15 2:52am

will that give the rendered ID of control??

Sreekanth Mothukuru 17-Jun-15 2:58am

The statement will give you button control if it exists on the page. You can use "Page.FindControl("Btn").Id" to get the button runtime Id something similar to "ctl00_MainContentPlaceHolder_BTN"

RVPathi 17-Jun-15 5:30am

Can u write the exact code? it is returning a string, and Attributes.add() works on aspControl. Do I have to convert that into aspControl ??

Sreekanth Mothukuru 17-Jun-15 6:02am

Yes. If it is an Asp.net control then type cast the same and then set the attribute value.

Ex:
Button b = (Button)Page.FindControl("Btn");
b.Attributes.Add("onclick", "window.close();");

or

Button b = Page.FindControl("Btn") as Button;
b.Attributes.Add("onclick", "window.close();");

Hope this helps.

RVPathi 17-Jun-15 6:46am

tried ur code, its throwing an error , object reference not set to an instance of object. Possibly it is not able to find the control.
so i tried it in this way:
MasterPage ctl00 = FindControl("ctl00") as MasterPage;
ContentPlaceHolder MainContent = ctl00.FindControl("MainContentPlaceHolder") as ContentPlaceHolder;
Button BTN1 = MainContent.FindControl("BTN") as Button;
BTN1.Attributes.Add("onclick", "window.close();");

Still not working.. :(

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_Amy · Answer 1 · 2015-06-16T20:12:00

Solution 1

You can only close a tab/window which you create. You cannot close a window/tab programmatically.

eg.: You can create a window using window.open() then only you can close that window using window.close().

--Amy

Posted 16-Jun-15 20:12pm

_Amy

Comments

RVPathi 17-Jun-15 2:35am

Window.open() or window.close() works fine from UI, but not from code behind. therefore i have tried BTN.Attributes.Add("onclick", "window.close();");. As I said it is working as expected from normal page, but when it comes to inheriting masterpage and content panels, page just refreshes rather than closing itself. Solution must be hidden somewhere if I am able achieve rendered ID of button contol from code behind. as there is some code in code behind which has to be executed first so I cant impose client side scripting in this scenario.hope u have got my point now.

_Amy 17-Jun-15 2:48am

You did not understand my answer I think. You can't close the current window in any browser because you didn't open it. You should check your browser console and see the error.
And if it works in Chrome and other browsers, that's a serious bug and you should report it.