open popup window in web application in page_load and button click

I received your answer and applied suitable code. but, popup window works for the same application, not for the other. For example, if i use(means create), when registration, in submit button click code, it should register/insert details into database and after that redirects to "".  In this suituation, i want to open "" as popup window.
but, if i use the given code sample, it does not popup new window.  Please help me to solve this
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David H.H.LeeCommented:
Hi tamelarasi,
>>...In this suituation, i want to open "" as popup window.
There are a lot of alternatives to solve this problem. This is one of the attempt:

void btnClick
   //your existing code...(insert data into database)
   Response.Write("<script type='text/javascript'>'');</script>");

After inserting into the DB, Add this line to the code

Page.ClientScript.RegisterStartupScript(this.GetType(), "openWin", "OpenWindow();", true);

After that in the Javascript

<script type="javascript">
function  OpenWindow()
{ ("","mywindow","location=0,status=0,scrollbars=0,width=500,height=350");

Open in new window


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