Cross Site Script Persistent Error for XmlDocument in VB.Net

Question

we have a scan for our application with hp fortify. in the result showed couple of cross site script Persistent issues. can anyone pls help me with fixing. Dim xdoc As XmlDocument =New XmlDocument xdoc.xmlResolver= null -- this also add no use xdoc.Loadxml(strxml) return xdoc -- it's returning error. please help me resolving this issue.