.NET GENERATE xml PROBLEM

[Agnes]

In my .net ,i need to generate an xml file , however, user may input a
chinese character, Then , the xml will got something unknow characters. the
following is my code, Does anyone know how to solve it ??

Private Sub Init()
With AMSXML
..Formatting = Formatting.Inde nted
..Indentation = 4
..IndentChar = " "
..WriteStartDoc ument()
..WriteDocType( "SOGenericInter change", Nothing, "SOGenericInter change.dtd",
Nothing)
..WriteStartEle ment("SOGeneric Interchange")
End With

End Sub
Private Sub InterchangeHead erIdentificatio n()
Try
With AMSXML
..WriteStartEle ment("Interchan geHeaderIdentif ication")
..WriteElementS tring("senderID ", strSenderid)
..WriteElementS tring("intercha ngeControlRefer ence", strFilename)
..WriteElementS tring("recipien tID", strReceiveId) <--- problem here .
..WriteElementS tring("payerID" , "")
..WriteEndEleme nt()
............... ...............