XML : c# - Generate xml with table constraints as tags and column names as value

I need to generate an XML like the below one with constraints as tags and column name as values for a specific DB table in c#.

  <tablename>  <key>ProductId</key>  <composite>  <column>ProductId</column>  <column>ProductCode</column>  <composite>  <ForeignKey>  <column>ProductBaseId</column>  </ForeignKey>  </tablename>    

Can anyone help on this?