迁移调用webservice的.net wcf项目到.net6,由于转义字符&导致接口不通

//迁移调用webservice的.net wcf项目到.net6,由于webservice地址带转义字符例如&导致接口不通




private void TestWs()
{
//<?xml version=\"1.0\" encoding=\"utf-8\"?>
string xml = "<soapenv:Envelope xmlns:soapenv=\"http://schemas.xmlsoap.org/soap/envelope/\" xmlns:asi=\"http://siebel.com/asi/\" ><soapenv:Header><UsernameToken xmlns=\"http://siebel.com/webservices\">LIULL113650</UsernameToken><PasswordText xmlns=\"http://siebel.com/webservices\">LIULL113650</PasswordText></soapenv:Header><soapenv:Body><asi:Hans_spcAccount_spcInfo_spcQuery_spcWF><SearchExpr>[Account.Id]=&apos;1-F188GK&apos;</SearchExpr></asi:Hans_spcAccount_spcInfo_spcQuery_spcWF></soapenv:Body></soapenv:Envelope>";
HttpContent content = new StringContent(xml, Encoding.UTF8, "text/xml");
//content.Headers.Add("SOAPAction", "http://tempuri.org/LIS