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up vote 2 down vote favorite

In ASP.NET, I build a string redirectURL to redirect to ADFS form with multiple query string parameters. One such complex parameter is the returnURL with multiple parameters.

My problem is that only the first parameter of the returnURL is available when it actually return. 

E.g. redirectURL = <br> 
https://aaa.aaa/adfs/Form.aspx <br>
?DomainName=domain <br>
&AccountName=account <br>
&returnURL=https://bbb.bbb/MyPage.aspx?param1=111&param2=222

I know it complicates when identify the &amp symbol of actual parameters and parameters in returnURL. Please help me to fix this.

Thanks in advance.

share|improve this question
    
Why are you passing a page with params to a page with params? What kind of functionality are you trying to achieve? – IrishChieftain Jan 12 '13 at 14:28
    
To build the redirectURL there's a specific method and it builds only main three parameters (DomainName, AccountName, returnURL). Then after the function at Form.aspx it again redirect to returnURL. I want two parameters in that return url. It may sounds complicated, but I hope it isn't impossible.. Pls help – user1408470 Jan 12 '13 at 14:38
up vote 7 down vote accepted

You should use HttpUtility.UrlEncode when composing the link and HttpUtility.UrlDecode when resolving it.

For your case it should be something similar to:

"https://aaa.aaa/adfs/Form.aspx?DomainName=domain&AccountName=account&returnURL=" + 
    HttpUtility.UrlEncode("https://bbb.bbb/MyPage.aspx?param1=111&param2=222")

And then at the target use:

HttpUtility.UrlDecode(Request.QueryString["returnURL"])
share|improve this answer
    
Alternately you can base64 encode/decode. – Iain Galloway Jan 12 '13 at 14:39
    
Thanks a lot. Sorry it took sometimes for me to test this implementation. – user1408470 Jan 15 '13 at 15:14

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