是不是这样写? xmlstr = "<?xml version="1.0" encoding =" UTF-8"?><Message><Head><CREATETIME>" + DateTime.Now.ToString() + "</CREATETIME><RESPONSECODE>0000</RESPONSECODE>"
xmlstr = "<?xml version="1.0" encoding =" UTF-8"?><Message><Head><CREATETIME>" + DateTime.Now.ToString() + "</CREATETIME><RESPONSECODE>0000</RESPONSECODE>"
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