how to create xml based signature in C#

I want to create digital signature like

<?xml version="1.0" encoding="UTF-8" standalone="yes" ?>
 <Envelope>
 
   <OrgContent>
   </OrgContent>
 
   <Signature>
     Y7z1Y+c+u80a9vhUSi`....`
     `......`u80a9vhUSi==
   </Signature>
 
   <Certificate>
     MIIExjCCA66gAwIBAgIJNv5`.......`
     `.....`66gAwIBAgIJNv5=
   </Certificate>
 
</Envelope>

 
Is there any source where i can get idea to generate these type of file while sending data from sender to receiver.
I refereed following link but not getting solution to generate above type of file.
http://www.c-sharpcorner.com/UploadFile/Gowri%20S%20Paramasivam/Cryptography211242005003308AM/Cryptography2.aspx[^]