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iframe request parent page querystring

Posted on 2011-03-10
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Last Modified: 2012-06-27
Parent.Page.Request.QueryString("In")

Hello, I tried the above to retrieve the parent page querystring but I get an error.
 System.NullReferenceException: Object reference not set to an instance of an object.

in vb how can I retrieve the querystring value to pass to my parameter?

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Question by:sevensnake77
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LVL 51

Expert Comment

by:HainKurt
ID: 35097709
just use

Request.QueryString("In")

or simply:

Request("In")


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LVL 9

Author Comment

by:sevensnake77
ID: 35097728
You did not read the entire question i suppose,
The page is in a iframe but I need the query string from the parent page the iframe lives.
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LVL 51

Expert Comment

by:HainKurt
ID: 35097801
do you mean this?

page.aspx has an iframe inside, say name=myFrame, src=frame.aspx

you call page.aspx?in=HK and somehow you post the myFrame and in the code frame.aspx.vb you want to get the in parameter of page.aspx?

if this is the case, you should create a hidden variable in frame.aspx and set it to "in" param before submitting it on client side, either with js or when you construct the src attribute of frame

like

<iframe src='frame.aspx?in=<%=request("in") %>' ...>
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LVL 51

Expert Comment

by:HainKurt
ID: 35097809
or use session...

on page.aspx.vb page_load event

session("in")=request("in")

then use session("in") in frame.aspx.vb
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Author Comment

by:sevensnake77
ID: 35097819
I tried a session but i thought there was another way on the server side.
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Accepted Solution

by:
HainKurt earned 500 total points
ID: 35098095
on the server you cannot get the parent page of browser :)

somehow you should pass that parameter to the server when iframe src is requested (either adding id to url or setting a cookie or setting a hidden variable and post it) or use session...

in your case simplest way is set a session whenever you have that param and use it later when you need...
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Author Closing Comment

by:sevensnake77
ID: 35098427
ts
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