create download link between two asp.net applications - asp.net

Question

Lets say I have two applications as:
www.test.com/a
www.test.com/b
In site b, I have a page set to download a pdf file. The page is called OpenBook.aspx, when I pass the bookId in the query string, it downloads the relevant file.
Here's the code to download this file from site b, by clicking on a link:
lbl.Text = "Report book {0}
is completed and ready for view. ";
Now this works within site B, but it obviously don't work within A. Because the path is set as www.test.com/a/Processing/OpenReportBook.aspx.....
I tried using the following:
string downloadLocation = HttpContext.Current.Request.Url.Host.ToString() + "/DataCenter/Processing/OpenReportBook.aspx?ReportID=";
Label2.Text = "Report book <a href='" + downloadLocation +
+ 948 +
"'>{0}</a> is completed and ready for view. ";
But still, the path is set relative to site A, when you click it from site A.
Can someone please explain how to resolve this?
Thanks

Answer 1

don't use HttpContext.Current.Request.Url.Host.ToString() .
Instead give the second url in web.config as below
<appSettings>
<add key="downloadurl" value="http://www.test.com/b" />
</appsetings>
And in your .cs file replace the folowing code
string downloadLocation = HttpContext.Current.Request.Url.Host.ToString() + "/DataCenter/Processing/OpenReportBook.aspx?ReportID=";
Label2.Text = "Report book <a href='" + downloadLocation +
+ 948 +
"'>{0}</a> is completed and ready for view. ";
with
string downloadLocation = ConfigurationManager.AppSettings[downloadurl"].ToString() + "/DataCenter/Processing/OpenReportBook.aspx?ReportID=";
Label2.Text = "Report book <a href='" + downloadLocation +
+ 948 +
"'>{0}</a> is completed and ready for view. ";
i hope this may solve your problem.