Use XSLT to compare multiple xml and list the differences in another xml file

Hello experts,
i wanted to know how to compare two xml files using  C# or xslt and display another xml file only 
with the differences in the xml file:

xml1:

<ORDERS><ORDER><ORDERNUM>979793524</ORDERNUM><TIES><TIE><TIENUMBER>1</TIENUMBER><ITEMS><ITEM><ITEMNUMBER>KF3P2</ITEMNUMBER><ITEMQTY>1</ITEMQTY></ITEM><ITEM><ITEMNUMBER>60RD2</ITEMNUMBER><ITEMQTY>1</ITEMQTY></ITEM></ITEMS></TIE></TIES></ORDER><ORDER><ORDERNUM>979794834</ORDERNUM><TIES><TIE><TIENUMBER>1</TIENUMBER><ITEMS><ITEM><ITEMNUMBER>K850M</ITEMNUMBER><ITEMQTY>1</ITEMQTY></ITEM><ITEM><ITEMNUMBER>T732H</ITEMNUMBER><ITEMQTY>1</ITEMQTY></ITEM></ITEMS></TIE></TIES></ORDER></ORDERS>

XML2:

<ORDERS><ORDER><ORDERNUM>979794834</ORDERNUM><TIES><TIE><TIENUMBER>1</TIENUMBER><ITEMS><ITEM><ITEMNUMBER>T732H</ITEMNUMBER><ITEMQTY>1</ITEMQTY></ITEM><ITEM><ITEMNUMBER>K850M</ITEMNUMBER><ITEMQTY>10</ITEMQTY></ITEM></ITEMS></TIE></TIES></ORDER><ORDER><ORDERNUM>979793524</ORDERNUM><TIES><TIE><TIENUMBER>1</TIENUMBER><TIEQTY>1</TIEQTY><ITEMS><ITEM><ITEMNUMBER>60RD2</ITEMNUMBER><ITEMQTY>1</ITEMQTY></ITEM><ITEM><ITEMNUMBER>KF3P2</ITEMNUMBER><ITEMQTY>25</ITEMQTY></ITEM></ITEMS></TIE></TIES></ORDER></ORDERS>

  
 
Expected Output:
 
 

<ORDERNUM>979793524</ORDERNUM><ITEMNUMBER>KF3P2</ITEMNUMBER><ITEMQTY>25</ITEMQTY><ORDERNUM>979794834</ORDERNUM><<ITEMNUMBER>K850M</ITEMNUMBER><ITEMQTY>10</ITEMQTY>

   

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ram

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ram