How to Show RIXML using Response.Write

Hi,
I have a web application which is calling REST web service as request. In the response, there are 4 URLS which gets returned about a document.
Using the URL information; I am able to download the content for PDF and display in webpage using the C#.net code in ASP.NET as below

Here is portion of XML that comes as Rest response. IT contains the URL for RIXML format of the document as well.
I want to know; how can I display the content of RIXML in the browser? similar to what I am able to do with PDF.
 <stream>https://abc.com/ABC_123?alt=raw</stream>            
<pdf>https://abc.com/ABC_123?alt=pdf</pdf>            
<rixml>https://abc.com/ABC_123?alt=rixml</rixml>

Code to retriev ...