<?xml version="1.0" encoding="utf-8"?>
<soap:Envelope xmlns:soap="http://www.w3.org/2003/05/soap-envelope" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
<soap:Body>
<getSupportCityResponse xmlns="http://tempuri.org/">
<getSupportCityResult>
<string>18</string>
<string>常熟        </string>
<string>常州        </string>
<string>淮安        </string>
<string>昆山        </string>
<string>连云港       </string>
<string>南京        </string>
<string>南通        </string>
<string>苏州        </string>
<string>宿迁        </string>
<string>太仓        </string>
<string>泰州        </string>
<string>无锡        </string>
<string>吴县        </string>
<string>徐州        </string>
<string>盐城        </string>
<string>扬州        </string>
<string>宜兴        </string>
<string>镇江        </string>
</getSupportCityResult>
</getSupportCityResponse>
</soap:Body>
</soap:Envelope>通过XmlDocument dom = new XmlDocument();
dom.Load(@"E:\getSupportCity.xml");
XmlElement objRootlist = dom.DocumentElement;
XmlNode nod = objRootlist .SelectSingleNode("//soap:Envelope/soap:Body/getSupportCityResponse/getSupportCityResult");
读取错误