C# XML Changes Help Required

Question

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I have a string containing XML(string stringXML), I load it in an XML document and make changes in that XML document dynamically,

C#

XmlDocument doc = new XmlDocument();
            doc.LoadXml(stringXML);
            var fnode = doc.GetElementsByTagName("feature")[0];
            var fval = fnode.Attributes["name"].Value;
            if (fval == "IMAGING_SERVICES")
            {
                var servcnode = doc.GetElementsByTagName("service")[0];
                var namenode = servcnode.Attributes["name"].Value;
                if (namenode == "PRINTING")
                {
                    doc.InnerXml.Replace(namenode, "IMAGING_OPTIONS");
                }
            }

Then i need to send stringXML to the server with changes in it, the problem arising is that it is not changing value of doc.
Second after changing in doc how can i also make changes in stringXML?

Posted 17-Apr-11 21:56pm

Syed Salman Raza Zaidi

Updated 17-Apr-11 22:00pm

Tarun.K.S

v2

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3 solutions

Solution 1

I don't event understand the problem: every node and attribute in DOM you're using is modifiable. Just look at help on related classes.

—SA

Posted 17-Apr-11 22:17pm

Sergey Alexandrovich Kryukov

Solution 2

Everything is working as expected:
If you change stringXML after the document has been constructed from the string you would have to repeat doc.LoadXml(stringXML).
If you make changes to doc and want them manifested in stringXML you'd have to render doc to a string again.

Best Regards,

-MRB

Posted 17-Apr-11 22:44pm

Manfred Rudolf Bihy

Updated 17-Apr-11 22:52pm

v2

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Tarun.K.S · Accepted Answer · 2011-04-17T22:45:00

After changing your XML, doc.OuterXml will have the updated the String.

C#

XmlDocument doc = new XmlDocument();
            doc.LoadXml(stringXML);
            var fnode = doc.GetElementsByTagName("feature")[0];
            var fval = fnode.Attributes["name"].Value;
            if (fval == "IMAGING_SERVICES")
            {
                var servcnode = doc.GetElementsByTagName("service")[0];
                var namenode = servcnode.Attributes["name"].Value;
                if (namenode == "PRINTING")
                {
                    doc.InnerXml.Replace(namenode, "IMAGING_OPTIONS");
                }
            }

String newXmlString = doc.OuterXml;

The newXmlString will have the updated XML.

Do you want to save the doc too?
Then you can reload the doc with the new XmlString :
doc.LoadXml(newXmlString);