How to trim XML's attribute values?

I have a program which generate a xml file from dataset using
DataSet.WriteXML function. The result is as follow:

<DataSet xmlns="http://tempuri.org/DataSet1.xsd";>
<TB TB_NO="NN01001" DESCRIPTION="NN " DATE="1/16/2007
12:00:00 AM" Name=" "
E_MAIL="test@xxxxxxxx">
<TD TD_NO="NN1-1 " LINE_NAME="FREE TRADE ZONE
" ADD1=" " TRSS="3" TYPEDESC="
" >
<DESCRIPTION SEQ_NO="001 " MARKS="RESOURCES " DSCP="
" />
<DESCRIPTION SEQ_NO="002 " MARKS=" " DSCP="
" />
<DESCRIPTION SEQ_NO="003 " MARKS="P.O.:11111111 " DSCP="
" />
<DESCRIPTION SEQ_NO="004 " MARKS="MADE IN CHINA " DSCP="
" />
<DESCRIPTION SEQ_NO="005 " MARKS=" " DSCP="
" />
<DESCRIPTION SEQ_NO="006 " MARKS=" " DSCP="
" />
</TD>
</TB>
</DataSet>


Is there any setting to set it to generate xml file with trim space values
and result should output as :

<DataSet xmlns="http://tempuri.org/DataSet1.xsd";>
<TB TB_NO="NN01001" DESCRIPTION="NN" DATE="1/16/2007 12:00:00 AM" Name=""
E_MAIL="test@xxxxxxxx">
<TD TD_NO="NN1-1" LINE_NAME="FREE TRADE ZONE" ADD1="" TRSS="3"
TYPEDESC="" >
<DESCRIPTION SEQ_NO="001" MARKS="RESOURCES" DSCP="" />
<DESCRIPTION SEQ_NO="002" MARKS="" DSCP="" />
<DESCRIPTION SEQ_NO="003" MARKS="P.O.:11111111" DSCP="" />
<DESCRIPTION SEQ_NO="004" MARKS="MADE IN CHINA" DSCP="" />
<DESCRIPTION SEQ_NO="005" MARKS="" DSCP="" />
<DESCRIPTION SEQ_NO="006" MARKS="" DSCP="" />
</TD>
</TB>
</DataSet>




.