Problem with Request.QueryString

[Rohan Sootarsin]

Hi I am having problems passing data to a webservice from a querystring

So I have a link in an email which points to
http://www.test.com/confirmdetails.aspx?AuthNo=11224442

On the confirmdetails.aspx page I have a call to a webservice which basically updates a database.

All I do on confirmdetails.aspx is as follows

string strAuthNo = Request.QueryString["AuthNo"].ToString();

And then call the webservice

webservice.confirmdetails(strAuthNo);

Now when I click the link in the email once I get the followng error

Input string was not in a correct format

If I then just click in the address bar and press enter then it works fine. What is it about the link in the email that makes this not work?

[Plater]

I have had similar issues (when the browser in question was IE)
It turned out to be related to the cache settings for me.
(i was setting the "no cache" setting and ie was puking on it)