Passing value from parent to child window created by Pop up?

you can send through querystring variable

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

 function openpopup(url)
    {
    
window.open(url, 'pop_window','toolbar=no,menubar=no,location=no,scrollbars=yes,height=300,width=450,left=200,top=200');

    }

//call from code behind

Page.ClientScript.RegisterStartupScript(this.GetType(), "aa", "<script language='javascript'>openpopup('page1.aspx?variable="+variabledata+"');</script>");

Hi,

passing data from one window to another through javascript means you can do it when you want to pass small amnt of data.


If you want to pass large data you've to follow through session variable

In first page code store required data in session variable .After that in second page code use that session variable data .

Instead of session you can use xml or any other files.But my prefer is use session
b'coz after user logouts session variables are cleared out .files are not.


I hope you understood What I said .

All the Best

Refer this article

Passing Values from Child Page to Parent Page[^]