Your xml file is not well formed.
Hope this helps as start.
XDocument objDoc = XDocument.Load(@"C:\Sites\stringEx\abc.xml");
var query = from x1 in objDoc.Descendants("INSTPARAM")
select new
{
code = x1.Attribute("CODE").Value.ToString(),
value = x1.Attribute("VALUE").Value.ToString(),
};
foreach(var x in query)
{
Console.WriteLine("{0} {1} ",x.code,x.value);
}
Modified your xml file like below..
<?xml version="1.0" ?>
<CDF>
<UTILITYTYPE CODE="1">
<D2>
<INSTPARAM CODE="P1-2-1-1-0" VALUE="222.38" UNIT="V" />
<INSTPARAM CODE="P1-2-2-1-0" VALUE="0" UNIT="V" />
<INSTPARAM CODE="P1-2-3-1-0" VALUE="0" UNIT="V" />
<INSTPARAM CODE="P2-1-1-1-0" VALUE="0" UNIT="A" />
<INSTPARAM CODE="P2-1-2-1-0" VALUE="0" UNIT="A" />
<INSTPARAM CODE="P2-1-3-1-0" VALUE="0" UNIT="A" />
<INSTPARAM CODE="P8-1-0-0-0" VALUE="" />
<INSTPARAM CODE="P8-2-0-0-0" VALUE="" />
<INSTPARAM CODE="P3-2-1-1-0" VALUE="0" UNIT="k" />
<INSTPARAM CODE="P3-3-1-1-0" VALUE="0" UNIT="k" />
<INSTPARAM CODE="P4-1-1-0-0" VALUE="" />
<INSTPARAM CODE="P3-2-2-1-0" VALUE="0" UNIT="k" />
<INSTPARAM CODE="P3-3-2-1-0" VALUE="0" UNIT="k" />
<INSTPARAM CODE="P4-2-1-0-0" VALUE="" />
<INSTPARAM CODE="P3-2-3-1-0" VALUE="0" UNIT="k" />
<INSTPARAM CODE="P3-3-3-1-0" VALUE="0" UNIT="k" />
<INSTPARAM CODE="P4-3-1-0-0" VALUE="" />
<INSTPARAM CODE="P3-2-4-1-0" VALUE="0" UNIT="k" />
<INSTPARAM CODE="P3-3-4-1-0" VALUE="0" UNIT="k" />
<INSTPARAM CODE="P3-4-4-1-0" VALUE="0" UNIT="k" />
<INSTPARAM CODE="P4-4-1-0-0" VALUE="" />
<INSTPARAM CODE="P9-1-0-0-0" VALUE="51.33" UNIT="Hz" />
</D2>
</UTILITYTYPE>
</CDF>
