如何使用C＃在SOAP请求中编辑XML数据？

Question

I would like to edit xml data for one element with in SOAP request in order to send unique SOAP requests.

Following is the example request

<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/"xmlns:web="http://webservice/">
   <soapenv:Header/>
   <soapenv:Body>
      <web:ca>
         <type1>
            <ad>2013-07-19</ad>
            <name>abcd 13071502</name>
            <taker>
               <taker>TEST</taker>
               <emailAddress>test@test.com</emailAddress>
               <name>nameTest</name>
               <phoneNo>007007007</phoneNo>
               <takerUid>1234</takerUid>
            </taker>
         </type1>
         <type2>4</type2>
         <type3>peace</type3>
         <type4>test</type4>
      </web:ca>
   </soapenv:Body>
</soapenv:Envelope>

I would like to change "name" element value from "abcd 13071502" to "abcd ". I was able to extract data from "name" element and edit the value by using following code in C#

System.Xml.XmlTextReader xr = new XmlTextReader(@filePath);
while (xr.Read())
{
if (xr.LocalName == "name")
    {
        xr.Read();
        currentNameValue = xr.Value;
        int cnvLen = currentNameValue.Length;
        string cnvWOdate = currentNameValue.Substring(0, cnvLen-8);
        string newNameValue = cnvWOdate+currTimeDate;
        break;
    }
}

However, I couldn't figure out how to edit the value and save the file. Any help would be appreciated. Thank you.

Answer 1

Use the XmlDocument class instead of the XmlTextReader class.

System.Xml.XmlDocument xd = new XmlDocument();
xd.Load(@"filepath");

foreach(XmlNode nameNode in xd.GetElementsByTagName("name"))
{
    if(nameNode.ParentNode.Name == "type1")
    {
        string currentNameValue = nameNode.InnerText;
        int cnvLen = currentNameValue.Length;
        string cnvWOdate = currentNameValue.Substring(0,cnvLen-8);
        string newNameValue = cnvWOdate+currTimeDate;

        nameNode.InnerText = newNameValue;
    }
}

xd.Save(@"newFilePath");

Answer 2

XmlDocument doc = new XmlDocument();
doc.Load("file path");

XmlNode nameNode = doc.SelectSingleNode("/Envelope/Body/ca/type1/name");

string currentNameValue = nameNode != null ? nameNode.InnerText : "name not exist";
int cnvLen = currentNameValue.Length;
string cnvWOdate = currentNameValue.Substring(0, cnvLen-8);
string newNameValue = cnvWOdate+currTimeDate;

nameNode.InnerText = newNameValue; //set new value to tag

To get Value or InnerText of a node, you will have to make sure the node exist. The line string currentNameValue has the format like this:

var variable = condition ? A : B;

It's basically saying that if condition is true, then variable equals A, otherwise, variable equals B.