HexaDecimal Error in XML Files

[danasegaranea]

Hi all, I am using this code to retrive the Viewsource content of page(Page content will be showed in XML). It was working well. But now I face one problem , the XML contain any special hexadecimal value then it display an error

Function GetXML(ByVal strTypeId As String) As String

    Dim xmlRef As New MSXML2.XMLHTTPClass
    Dim strUrl As String="Test.Asp"


    Try
        Console.WriteLine(strUrl.Trim)
        xmlRef.open("GET", strUrl.Trim, False)
        xmlRef.send()
        GetXML = xmlRef.responseText
        GetXMLDoc(-1)
        'http://msdn2.microsoft.com/en-us/library/k1y7hyy9(vs.71).aspx
        If xmlRef.statusText = "OK" Then
            Return GetXML
        Else
            'Return GetXML = "False"
        End If

    Catch ex As Exception
        'Return GetXML = "False"
    End Try

End Function

Error : "'?', hexadecimal value 0xFFFF, is an invalid character." Hw to solve this one Thanks Dana