If your question is to create a new xml file then have a look at this link
C Sharp Informations
or
Stack Overflow
or
Mind Fire Solutions
if you are looking for how to read xml file then have a look at the below links
C Sharp Informations To Read
A simple google search gives me these many below links
A simple google search
Have a look at that, and if you are looking for some other solution other than the above mentioned, links then better phrase your question or post comments.