i am using vs2005 and vb.net
i am using this piece of code to pop up a window(i:e a aspx page) from a main page(also a aspx page)
before opening that pop up window i want to check whether any pop up window from main page is already opened or not...
if any pop up window is already opened then close this and open pop up window again
how do i do this in vb.net....
if i can use script then help me by providing some code...

pop up window code..........
gstrPopupScript = "<script language='javascript'>" & "window.open('" & ConfigurationManager.AppSettings("ActionTypeURL4") & "', 'CustomPopUp', " & "'width=800, height=600,statusbar=yes ,scrollbars=yes, menubar=no, resizable=yes')" & "</script>"
 ClientScript.IsStartupScriptRegistered(gstrPopupScript)
 Response.Write(gstrPopupScript)

 http://forums.asp.net/t/1049405.aspx

hi,

This is how I have checked..

function UserAddress(page)

childRef = window.open(page , '','width = 550, height =500 ,top = 100, left = 260,status=1,resizable=0,scrollbars=1,addressbar=0,modal=1');

else

but the fact is that..
if i use a variable in aspx.vb file...during opening a pop up...like
 gstrPopupScript = "<script language='javascript'>" & "new_window=window.open('" & ConfigurationManager.AppSettings("ActionTypeURL4") & "', 'CustomPopUp', " & "'width=800, height=600,statusbar=yes ,scrollbars=yes, menubar=no, resizable=yes')" & "</script>"
            ClientScript.IsStartupScriptRegistered(gstrPopupScript)
            Response.Write(gstrPopupScript)

can i access that variable(i.e: new_window) in script in aspx page source to close that form..
then how....try to answer this according to my code...

Hi,

Try this

gstrPopupScript = "<script language='javascript'>" & "if(new_window==null || new_window.Closed) { new_window=window.open('" & ConfigurationManager.AppSettings("ActionTypeURL4") & "', 'CustomPopUp', " & "'width=800, height=600,statusbar=yes ,scrollbars=yes, menubar=no, resizable=yes') } else { new_window.window.focus(); return false; }" & "</script>"
            ClientScript.IsStartupScriptRegistered(gstrPopupScript)
            Response.Write(gstrPopupScript)

And put this javascript in your code

<script type="text/javascript">

var new_window = null;

</script>

but its not working..

Add this to the aspx file

<script type="text/JavaScript">
var childWindow = null;

function openWindow(windowUrl)
{
 if ( childWindow != null && childWindow.closed == false)
 {
  childWindow.close();
  childWindow = null;
 }

     childWindow = window.open(windowUrl, 'CustomPopUp', 'width=800, height=600,statusbar=yes ,scrollbars=yes, menubar=no, resizable=yes')
}
</script>"

Change your script rendering in the CodeBehind file to:

Dim javaScript As String = "<script type=text/JavaScript>openWindow('" + ConfigurationManager.AppSettings("ActionTypeURL4") + '");</script>"
RegisterStartupScript("OpenWindowScript", javaScript)

Note that RegisterStartupScript has changed since version 1.1 and you will get a compiler warning with the above. See http://msdn2.microsoft.com/en-us/library/system.web.ui.clientscriptmanager.aspx for more info.

Also note that if a PostBack occurs, you will lose your window refernce and this will not work.

NC...

how to retain the value during postbacks.

ptherwise how can i do this?

To retain values you can use session variables.

but how could i implement session in my code..
plz give some code help..

This is how you create a session variable

Session["VariableName"] = assign any value to it..as for example

Session["VariableName"] = txtbox.text;

To access session variable again use this/

if(Session["VariableName"] != null)

{

textBox2.text = Session["VariableName"];

}

It's always good to check for Session["VariableName"] exists or not...

Hi,

window.open has a 4th optional parameter (replace: boolean) which you can use to check whether the same window is already open or not.

var x = window.open('test.aspx', 'CustomPopUp', 'width=800, height=600,statusbar=yes ,scrollbars=yes, menubar=no, resizable=yes',true)

So if user click the link n number of time, only a single window will open.

bp47580:

how to retain the value during postbacks.

ptherwise how can i do this?

There is no way. You could only stop all PostBacks. You cannot place client-side window references into Session state. Give it up! Again -- there is no way to retain the window reference when a postback occurs!

NC...