How to tell PageA.aspx to force a postback on PageB.aspx ?

Hi everyone,
I have a query here.

I have one form page (let me call it form.aspx). What is required is, one a button is clicked, a small window (i call it password.aspx) will appear requesting for password.

What I need is right after the password has been entered and submitted, the data will be processed and then a postback will happen at form.aspx depending on whether the submitted password was successfull or not.

What do i need to do to achieve this?

Thanks in advance :)

PS: Let me know if my explanation is not clear. :)

As I understand, you want to redirect the user from the FORM.aspx to say a page ABC.aspx, once he enters the correct password in the small window.

I guess, after validating the password, you can add the following javascript:

Code:

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window.parent.href="ABC.aspx";
//close the small window
window.close();

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